Operation Global Health & Wellbeing
Vitamin D Deficiency in Andorra
2014–2024 – A Comprehensive Overview
Historical Document Notice
This document is preserved as part of NaturismRE's original public health and government engagement documentation. It reflects the research, sources, terminology, assumptions, and analytical position used at the time of preparation. More recent NRE Health Institute material may refine, update, or replace parts of this report.
Executive Summary
Vitamin D deficiency has become a recognized public health issue across Europe in the past decade, and Andorra is no exception. Despite its many sunny days, Andorra’s population exhibits vitamin D insufficiency rates comparable to those of its neighbors.
This report provides an in-depth look at vitamin D deficiency in Andorra from 2014 to 2024, including prevalence by age, sex, and season; trends over time; associated health outcomes; public health initiatives; supplementation policies; food fortification strategies; and comparisons with neighboring France and Spain.
All data and claims are supported by government, academic, or international sources as referenced throughout the report.
Introduction and Overview
Andorra, a small mountainous country located at approximately 42°N latitude, faces the same “vitamin D dilemma” as many other European nations.
Vitamin D, primarily obtained through skin exposure to UVB sunlight and to a lesser extent from diet, is essential for bone health and has broader impacts on immunity and chronic disease. Yet modern lifestyles and Andorra’s long winters contribute to widespread suboptimal levels.
Current estimates indicate that roughly 40–60% of people in Europe, and by extension Andorra, have insufficient vitamin D status, typically defined as serum 25-hydroxyvitamin D [25(OH)D] below 50 nmol/L (20 ng/mL). Approximately 13% are considered severely deficient with levels below 30 nmol/L (12 ng/mL).
These figures highlight that vitamin D insufficiency remains common even in populations with abundant sunshine, due to factors such as limited winter UV exposure, indoor lifestyles, insufficient dietary intake, and the absence of widespread food fortification policies.
Research from neighboring Spain illustrates this paradox clearly. Despite being among Europe’s sunniest countries, approximately 75% of the Spanish population has been reported as vitamin D deficient. Andorra shares many geographic, climatic, and cultural characteristics with Spain and southern France, making these findings particularly relevant.
Over the period 2014–2024, vitamin D deficiency emerged as a significant public health concern in Andorra. While awareness increased among healthcare providers and the public, deficiency and insufficiency remained common across all age groups, particularly among children, adolescents, older adults, and individuals with limited sunlight exposure.
Prevalence of Vitamin D Deficiency in Andorra
Overall Population
No large-scale national survey has measured serum vitamin D levels across the entire population of Andorra. However, data from neighboring European populations provide a useful framework for understanding the likely scale of the issue.
Across Europe, approximately 40% of individuals are estimated to have serum 25-hydroxyvitamin D levels below 50 nmol/L, a commonly used threshold for insufficiency. Southern European countries frequently report even higher rates despite greater annual sunshine exposure.
Based on available regional evidence, Andorra’s overall vitamin D deficiency prevalence is likely comparable to surrounding areas of Spain and France. This suggests that a substantial proportion of the population experiences insufficient vitamin D status during part or all of the year.
Severe deficiency appears less common but remains clinically significant. Available European data indicate that approximately 10–15% of individuals may fall within ranges associated with severe deficiency, particularly during winter months and among high-risk groups.
Prevalence by Age Group
Children and Adolescents
Children and adolescents consistently demonstrate some of the highest rates of vitamin D insufficiency observed in Europe.
Growth demands, school attendance, indoor activities, screen use, and seasonal reductions in ultraviolet exposure all contribute to lower vitamin D status among younger populations.
Research conducted in neighboring regions reported that more than one-third of school-aged children had vitamin D levels below commonly accepted sufficiency thresholds.
In Catalonia, located at approximately the same latitude as Andorra, researchers reported that 31.9% of children aged 2–14 years had vitamin D levels below 20 ng/mL. During winter, this prevalence increased dramatically to 52.9%.
Key Observation
In comparable populations at approximately 42°N latitude, vitamin D deficiency affected roughly one-third of children during summer and more than half during winter.
Adolescents appear particularly vulnerable. Studies from Spain have reported deficiency rates approaching 80% among teenagers, largely attributed to reduced outdoor activity, increased screen time, and insufficient dietary intake.
Given Andorra’s geographic location and lifestyle patterns, similar seasonal and age-related trends are likely to occur within the country.
Older Adults
Older adults represent another major risk group for vitamin D deficiency.
Ageing skin becomes progressively less efficient at synthesising vitamin D from sunlight. Simultaneously, reduced mobility, institutionalisation, chronic illness, and limited outdoor activity can further reduce exposure to ultraviolet radiation.
European studies consistently report very high deficiency rates among elderly populations. Research involving community-dwelling seniors has documented widespread insufficiency, while studies in hospital and residential care settings often report even higher prevalence rates.
Available evidence suggests that a majority of adults over 65 years of age may experience vitamin D insufficiency, particularly during winter and early spring.
As a result, older adults have become a primary target of supplementation and prevention programs across Europe, including those implemented within Andorra’s healthcare system.
Prevalence by Sex
Men and Women
Current evidence does not indicate major biological differences in vitamin D status between men and women.
Observed differences are generally associated with behaviour, healthcare utilisation, lifestyle, and supplementation practices rather than sex itself.
Women are often more likely to undergo health screening and receive vitamin D supplementation, particularly in relation to osteoporosis prevention and post-menopausal health.
Men, especially older men, may be less likely to receive targeted supplementation despite facing similar risks of deficiency.
Overall, vitamin D insufficiency affects both sexes throughout Andorra, with age and seasonal factors exerting a much stronger influence than sex alone.
Seasonal Variation
Annual Vitamin D Winter
Seasonal variation represents one of the most important determinants of vitamin D status in Andorra.
Located at approximately 42°N latitude, Andorra experiences significant fluctuations in ultraviolet radiation throughout the year.
During late autumn, winter, and early spring, the angle of the sun is insufficient for effective vitamin D synthesis in the skin. Consequently, individuals relying primarily on sunlight experience a progressive decline in vitamin D stores during these months.
Evidence from neighboring regions demonstrates a marked increase in deficiency prevalence during winter compared with summer.
Studies conducted in northern Spain observed vitamin D deficiency rates increasing from approximately one-third of children during summer to more than one-half during winter.
Similar seasonal declines have also been documented among adults, with lowest vitamin D levels typically recorded at the end of winter and highest levels observed following summer.
Seasonal Pattern
- Highest Vitamin D Levels: Late summer and early autumn
- Lowest Vitamin D Levels: Late winter and early spring
- Highest Deficiency Risk: December to March
- Most Vulnerable Groups: Children, adolescents, older adults, and individuals with limited outdoor exposure
Although Andorra’s mountainous environment can increase ultraviolet intensity at higher altitudes, cold temperatures, shorter daylight periods, and heavier winter clothing significantly reduce the practical benefits of this effect.
As a result, Andorra experiences a distinct annual “vitamin D winter,” during which supplementation, dietary intake, and preventive measures become particularly important.
Trends in Vitamin D Status (2014–2024)
Early 2010s: Recognition of a Growing Issue
Studies conducted across Europe during the early 2010s increasingly identified vitamin D insufficiency as a widespread public health concern. By the middle of the decade, healthcare professionals in Andorra had begun taking note of emerging evidence from neighboring Spain, France, and broader European populations.
Although Andorra did not conduct a large-scale national vitamin D survey during this period, findings from surrounding regions suggested that deficiency and insufficiency were common across multiple age groups.
Around 2014–2015, French health surveys reported that severe vitamin D deficiency remained present within the general population and that overall vitamin D status had not significantly improved despite growing awareness.
Andorra’s situation was generally assumed to be similar due to shared geography, climate, lifestyle factors, and healthcare practices.
Mid-to-Late 2010s: Growing Awareness
Between 2016 and 2019, awareness of vitamin D’s role in health increased substantially across Europe.
Research increasingly linked vitamin D status not only to bone health but also to muscle function, immune regulation, healthy ageing, and broader chronic disease prevention.
During this period, Andorran healthcare providers increasingly incorporated vitamin D considerations into clinical practice. Individuals considered at higher risk, including older adults, people with osteoporosis, patients with malabsorption disorders, and those with limited sunlight exposure, were more frequently assessed and treated.
Nutritional surveys conducted during this period also reinforced the importance of improving dietary quality and awareness of nutrient deficiencies, including vitamin D.
Key Development
By the end of the 2010s, vitamin D deficiency was no longer viewed solely as a clinical issue but increasingly as a population-level public health concern.
Impact of COVID-19 (2020–2022)
The COVID-19 pandemic significantly increased public interest in vitamin D throughout Europe, including Andorra.
Emerging research suggested possible associations between low vitamin D status and poorer outcomes in respiratory infections, including COVID-19. Although these findings remained the subject of ongoing scientific evaluation, they generated widespread public awareness.
During periods of lockdown and restricted movement, many individuals experienced reduced outdoor exposure. At the same time, vitamin D supplementation increased substantially as consumers sought to support overall health and immune function.
Across Europe, supplement sales experienced exceptional growth during this period, with vitamin D among the fastest-growing categories.
In Andorra, healthcare professionals increasingly discussed vitamin D supplementation with patients, particularly those spending extended periods indoors.
Post-Pandemic Period (2023–2024)
Following the pandemic, awareness of vitamin D remained significantly higher than before 2020.
Public discussion increasingly focused on the persistence of deficiency despite living in regions with abundant sunshine. Reports from Spain highlighting widespread deficiency further reinforced public awareness throughout the Iberian region.
By 2024, Andorran healthcare providers generally regarded vitamin D deficiency as an ongoing public health challenge requiring continued attention through prevention, education, dietary guidance, and supplementation strategies.
While awareness improved considerably over the decade, available evidence suggests that vitamin D insufficiency remained common across the population, particularly during winter and among vulnerable groups.
Summary of Trends (2014–2024)
- Growing recognition of vitamin D deficiency as a public health issue.
- Increased screening and supplementation among at-risk groups.
- Greater public awareness following the COVID-19 pandemic.
- Improved professional guidance and prevention efforts.
- Persistent deficiency and insufficiency despite increased awareness.
Health Outcomes Associated with Vitamin D Deficiency
Bone Health: Rickets, Osteomalacia, Osteoporosis, and Fracture Risk
Vitamin D plays a central role in calcium and phosphorus regulation, which is essential for bone mineralisation and long-term skeletal health.
In children, severe vitamin D deficiency can cause rickets, a condition involving softening and deformity of developing bones. Routine infant supplementation has made nutritional rickets rare in Andorra, but prevention remains important.
In adults, prolonged deficiency can contribute to osteomalacia, bone pain, reduced mineralisation, and increased osteoporosis risk. Even moderate insufficiency can elevate parathyroid hormone levels, increasing bone turnover and accelerating bone loss.
For older adults, inadequate vitamin D status is particularly concerning because it contributes to fracture risk alongside calcium intake, physical activity, fall risk, and underlying osteoporosis.
Muscle Function and Falls
Vitamin D also contributes to muscle function. Deficiency may be associated with muscle weakness, reduced physical performance, myalgia, and impaired balance.
Among older adults, these effects can increase the risk of falls. Falls are a major public health concern because they may lead to fractures, hospitalisation, reduced mobility, loss of independence, and long-term care needs.
International studies have shown that correcting vitamin D deficiency in older populations can improve muscle function and may reduce fall frequency, especially in institutional or high-risk settings.
In Andorra, vitamin D optimisation is therefore relevant not only to bone health but also to healthy ageing, mobility, and fall-prevention strategies.
Immune Function and Infectious Disease
Vitamin D is involved in immune regulation, particularly through effects on innate immune responses.
Research has associated sufficient vitamin D status with improved resistance to some respiratory infections, while deficiency has been linked in observational studies with higher susceptibility to infection and poorer outcomes.
During the COVID-19 pandemic, interest in vitamin D increased significantly after studies reported associations between low vitamin D status and more severe COVID-19 outcomes.
These findings do not establish vitamin D as a cure or substitute for medical care, vaccination, or public health measures. However, they reinforced the importance of avoiding severe deficiency as part of broader health resilience.
Public Health Relevance
Vitamin D should not be presented as a treatment for infectious disease. Its relevance lies in correcting deficiency, supporting general health, and reducing avoidable nutritional vulnerability.
Chronic Diseases
Low vitamin D status has been associated in epidemiological studies with several chronic disease risks, including cardiovascular disease, hypertension, type 2 diabetes, obesity, and some cancers.
These relationships are complex. In some cases, vitamin D deficiency may contribute to poorer health outcomes. In other cases, chronic illness, obesity, reduced mobility, or indoor lifestyles may themselves contribute to lower vitamin D levels.
As a result, vitamin D should be understood as one factor within a broader preventive health framework rather than as a single-cause explanation for chronic disease.
In Andorra, where preventive healthcare and healthy ageing are important public health priorities, vitamin D status is relevant to wider nutritional risk assessment and long-term disease prevention.
Mental Health and Seasonal Wellbeing
Vitamin D deficiency has also been associated with mood disorders, including depressive symptoms, though causation remains under investigation.
Andorra’s winter conditions, shorter daylight exposure, and reduced outdoor activity may contribute to seasonal changes in mood and wellbeing for some residents.
Low sunlight exposure and vitamin D insufficiency may be one contributing factor among several, including sleep patterns, physical activity, social connection, and overall health status.
Ensuring adequate vitamin D status may therefore support broader mental wellbeing strategies, especially during winter, but should not be presented as a standalone treatment for depression or mental illness.
Summary of Health Outcomes
- Vitamin D is essential for bone mineralisation and skeletal health.
- Deficiency can contribute to muscle weakness and increased fall risk.
- Immune function may be affected by low vitamin D status.
- Associations exist with several chronic diseases, though causality is complex.
- Seasonal wellbeing and mental health may be indirectly affected by low sunlight and deficiency.
Public Health Initiatives and Awareness Campaigns
Growing Public Health Recognition
Over the past decade, Andorran health authorities have increasingly recognised vitamin D deficiency as a relevant public health concern. While no single nationwide campaign has focused exclusively on vitamin D, the topic has progressively been incorporated into broader public health, nutrition, healthy ageing, and preventive medicine initiatives.
Public awareness efforts have focused on helping citizens understand the relationship between sunlight exposure, nutrition, supplementation, and overall health.
Healthcare providers have played a central role in communicating these messages, particularly to groups considered at elevated risk of deficiency.
Safe Sun Exposure Education
One of the principal public health approaches has been education regarding safe and appropriate sunlight exposure.
Health authorities have sought to balance two important objectives: maintaining adequate vitamin D production while reducing the risks associated with excessive ultraviolet exposure and skin cancer.
Public guidance has generally promoted moderate and responsible sun exposure while continuing to encourage sun protection during periods of elevated UV intensity.
Educational materials have highlighted that brief periods of regular sunlight exposure may contribute to maintaining vitamin D levels, while emphasizing the importance of avoiding sunburn and excessive exposure.
Nutritional Education
Public health messaging has also emphasized the role of diet in supporting vitamin D intake.
Healthcare professionals have encouraged consumption of foods naturally containing vitamin D, including oily fish, eggs, and certain dairy products.
Nutritional surveys conducted during the period reinforced broader dietary improvement objectives, including awareness of nutrient deficiencies and balanced dietary patterns.
Educational programs delivered through healthcare settings, community activities, and public information campaigns have contributed to increasing awareness of vitamin D-rich food sources.
Healthy Ageing and Bone Health Programmes
Vitamin D has increasingly been incorporated into initiatives focused on healthy ageing, osteoporosis prevention, and fall reduction.
Public health activities associated with bone health awareness have frequently included information regarding vitamin D, calcium intake, physical activity, and fracture prevention.
These initiatives have been particularly relevant for older adults, who remain one of the groups most vulnerable to vitamin D insufficiency and its consequences.
Through these programmes, vitamin D has become part of a broader preventive health strategy rather than an isolated nutritional issue.
COVID-19 and Increased Awareness
The COVID-19 pandemic significantly increased public interest in vitamin D throughout Europe, including Andorra.
Discussions surrounding immune health, respiratory illness, and nutritional resilience resulted in greater public awareness of vitamin D and increased use of supplements.
During periods of restricted movement and reduced outdoor activity, health authorities reinforced messages encouraging individuals to maintain adequate nutritional status and to seek professional advice where appropriate.
The pandemic period marked a notable increase in public familiarity with vitamin D and its role in overall health.
Healthcare Professional Engagement
Much of Andorra’s progress in addressing vitamin D deficiency has occurred through routine engagement between healthcare professionals and patients.
Family physicians, nurses, dietitians, paediatricians, endocrinologists, and pharmacists have all contributed to improving awareness and prevention.
Clinical consultations increasingly include discussion of sunlight exposure, diet, supplementation, and risk factors associated with deficiency.
This healthcare-based model has allowed vitamin D education to become integrated into routine preventive care rather than relying solely on mass-media campaigns.
Key Public Health Themes (2014–2024)
- Increased recognition of vitamin D deficiency as a public health issue.
- Promotion of safe and moderate sunlight exposure.
- Greater emphasis on dietary sources of vitamin D.
- Integration of vitamin D into healthy ageing and bone health initiatives.
- Significant increase in awareness following the COVID-19 pandemic.
- Strong reliance on healthcare professionals as the primary source of education and guidance.
Vitamin D Supplementation Policies and Guidelines
Infants (0–12 Months)
Universal vitamin D supplementation for infants represents one of the most established and consistently applied prevention strategies in Andorra.
Newborns are generally recommended to receive daily vitamin D supplementation from the first days of life. Typical recommendations align with broader European guidance and commonly involve approximately 400 IU (10 µg) per day during the first year of life.
This policy has been highly successful in preventing nutritional rickets and other severe deficiency disorders during infancy.
Some healthcare providers also recommend continuation of supplementation beyond infancy, particularly during periods of limited sunlight exposure or where additional risk factors are present.
Children and Adolescents
Beyond infancy, routine supplementation is not universally prescribed to all children and adolescents. Instead, supplementation recommendations are generally guided by individual risk assessment.
Children with limited outdoor exposure, dietary deficiencies, obesity, chronic illness, or other risk factors may be advised to take vitamin D supplements throughout the year or during winter months.
Growing awareness of widespread deficiency among adolescents has resulted in greater emphasis on preventive supplementation within paediatric and family medicine settings.
Healthcare professionals increasingly recognise that lifestyle factors, including increased screen time and reduced outdoor activity, may place younger populations at elevated risk.
Adults (18–64 Years)
For healthy adults, routine vitamin D supplementation is not generally recommended on a population-wide basis. However, supplementation is frequently advised for individuals with known risk factors or limited sunlight exposure.
Office workers, individuals spending significant time indoors, people with chronic health conditions, and those avoiding sun exposure may be advised to take maintenance doses during winter months or throughout the year.
Typical supplementation strategies involve daily vitamin D3 formulations available through local pharmacies and healthcare providers.
Pregnant women and breastfeeding mothers often receive additional guidance regarding vitamin D intake due to the importance of maintaining adequate maternal and infant nutritional status.
Older Adults (65+ Years)
Older adults remain one of the highest-priority groups for vitamin D supplementation in Andorra.
Reduced skin synthesis, lower outdoor activity, chronic disease, institutionalisation, and increased fracture risk all contribute to the vulnerability of this population.
Healthcare providers commonly recommend ongoing vitamin D supplementation for older adults as part of broader osteoporosis prevention and healthy ageing strategies.
Supplementation is frequently combined with calcium management, fall prevention initiatives, and bone health monitoring.
Residential care facilities and long-term care settings often incorporate vitamin D supplementation into routine preventive healthcare practices.
Availability and Access
Vitamin D supplements are widely available through pharmacies across Andorra.
A variety of formulations are accessible, including drops, tablets, capsules, liquid preparations, and higher-dose prescription products used in deficiency treatment.
Healthcare providers may prescribe vitamin D where clinically indicated, while lower-dose maintenance supplements can generally be purchased directly by consumers.
Accessibility and affordability have not been identified as major barriers within Andorra’s healthcare system. The greater challenge remains encouraging consistent use among individuals who would benefit from supplementation.
Clinical Management of Deficiency
When vitamin D deficiency is identified through clinical assessment or laboratory testing, treatment typically involves oral vitamin D supplementation designed to restore adequate levels before transitioning to a maintenance regimen.
Treatment approaches vary according to age, severity of deficiency, underlying health conditions, and clinical judgement.
Family physicians manage the majority of cases, while endocrinologists and other specialists may become involved when deficiency occurs alongside more complex metabolic or chronic health conditions.
Follow-up monitoring is commonly used to assess treatment effectiveness and ensure long-term maintenance of adequate vitamin D status.
Overall Policy Approach
Andorra’s supplementation strategy can be described as targeted rather than universal.
The healthcare system prioritises groups at elevated risk, including infants, older adults, pregnant women, individuals with chronic illness, and those with limited sunlight exposure.
This approach seeks to balance accessibility, clinical effectiveness, and resource allocation while encouraging individuals to take responsibility for maintaining adequate vitamin D status through a combination of sunlight exposure, nutrition, and supplementation where appropriate.
Key Supplementation Priorities
- Universal infant supplementation remains a cornerstone of prevention.
- Children and adolescents with risk factors increasingly receive supplementation guidance.
- Adults with limited sun exposure are encouraged to consider supplementation.
- Older adults remain the highest-priority group for routine supplementation.
- Vitamin D products are widely available through pharmacies and healthcare providers.
- Clinical management focuses on correction of deficiency followed by long-term maintenance.
Food Fortification and Dietary Strategies
Current Food Fortification Landscape
Unlike some northern European countries, Andorra does not currently operate a mandatory vitamin D food fortification programme.
The country therefore relies primarily on a combination of sunlight exposure, dietary intake, supplementation, and clinical intervention to address vitamin D deficiency.
This approach is broadly consistent with practices observed in neighboring Spain and France, where food fortification remains relatively limited compared with countries such as Finland, Sweden, Canada, and the United States.
As a result, vitamin D intake among the general population remains heavily dependent on individual behaviour and healthcare guidance.
Foods Naturally Containing Vitamin D
Public health guidance in Andorra encourages regular consumption of foods naturally containing vitamin D as part of a balanced dietary pattern.
Frequently recommended sources include:
- Oily fish such as salmon, sardines, mackerel, and tuna.
- Egg yolks.
- Dairy products.
- Certain mushrooms exposed to ultraviolet light.
- Foods naturally rich in vitamin D or fortified where available.
Although these foods contribute to overall intake, dietary sources alone are often insufficient to maintain optimal vitamin D status for many individuals, particularly during winter months.
Voluntary Fortification
Some vitamin D-fortified products are available within Andorra through imported food products, particularly those originating from broader European markets.
These may include selected dairy products, breakfast cereals, plant-based beverages, juices, margarine products, and nutritional supplements.
However, voluntary fortification remains inconsistent across product categories and is not currently sufficient to significantly influence population-wide vitamin D status.
Access therefore depends largely on consumer awareness, product selection, and purchasing habits.
International Comparisons
International experience suggests that countries implementing systematic vitamin D fortification programmes often achieve higher average vitamin D levels than countries relying primarily on supplementation and sunlight exposure.
Nordic countries provide a notable example. Despite receiving substantially less sunlight than southern Europe, countries such as Finland and Sweden report higher average vitamin D status, largely attributed to long-standing fortification policies and widespread supplementation practices.
This contrast has led some public health experts to question whether countries with abundant sunshine, including Andorra, Spain, and France, may be underutilising food fortification as a preventive public health tool.
Potential Future Strategies
Several approaches have been discussed internationally as possible methods for improving vitamin D intake at the population level.
Potential options include:
- Expansion of voluntary food fortification programmes.
- Fortification of commonly consumed staple foods.
- Targeted fortification of dairy and alternative milk products.
- Enhanced public education regarding dietary vitamin D sources.
- Integration of dietary strategies with supplementation programmes.
As of 2024, Andorra continues to rely primarily on education, supplementation, and healthcare guidance rather than mandatory fortification policies.
Dietary Strategy and Public Health Perspective
Current public health approaches emphasize dietary diversification rather than dependence on any single source of vitamin D.
Health professionals encourage individuals to combine moderate sunlight exposure, balanced nutrition, and supplementation where necessary to maintain adequate vitamin D status throughout the year.
This integrated strategy recognises that no single intervention is likely to eliminate vitamin D deficiency across the population.
Key Findings
- Andorra does not currently operate a mandatory vitamin D fortification programme.
- Dietary sources contribute to vitamin D intake but are often insufficient on their own.
- Some fortified products are available through imported food markets.
- International experience suggests fortification can significantly improve population vitamin D status.
- Current policy continues to emphasize education, supplementation, and individual dietary choices.
Access to Vitamin D Testing and Treatment
Access to Vitamin D Testing
Vitamin D testing is available throughout Andorra’s healthcare system and may be requested by healthcare professionals when clinically indicated.
The primary laboratory assessment involves measurement of serum 25-hydroxyvitamin D [25(OH)D], which is considered the standard marker for evaluating vitamin D status.
Testing is generally recommended for individuals considered at elevated risk of deficiency, including older adults, patients with osteoporosis, individuals with chronic illnesses, people with malabsorption disorders, and those presenting symptoms potentially associated with deficiency.
Routine population-wide screening is not currently recommended. Instead, testing is primarily guided by clinical judgement and individual risk assessment.
Targeted Screening Approach
Similar to practices adopted elsewhere in Europe, Andorra generally follows a targeted screening model rather than universal testing.
This approach aims to prioritize individuals most likely to benefit from diagnosis and intervention while avoiding unnecessary healthcare expenditure associated with widespread testing of low-risk populations.
Healthcare providers typically evaluate factors such as age, lifestyle, medical history, nutritional status, medication use, and sunlight exposure when determining whether vitamin D testing is appropriate.
This risk-based strategy reflects growing international consensus that supplementation may often be more cost-effective than routine testing among certain populations.
Treatment of Vitamin D Deficiency
When vitamin D deficiency is identified, treatment generally involves oral vitamin D supplementation designed to restore adequate serum levels.
Treatment protocols vary depending on severity, age, underlying medical conditions, and clinical judgement.
Individuals with severe deficiency may receive higher-dose replacement therapy over a defined period before transitioning to a long-term maintenance regimen.
Mild and moderate deficiencies are commonly managed through lower-dose supplementation, dietary guidance, and lifestyle recommendations intended to improve long-term vitamin D status.
Clinical Follow-Up and Monitoring
Follow-up assessment is frequently used to evaluate treatment effectiveness and determine whether additional intervention is required.
Healthcare providers may repeat vitamin D testing after a period of supplementation to confirm that adequate levels have been achieved.
Long-term monitoring is particularly important for individuals with chronic disease, osteoporosis, malabsorption conditions, obesity, or other risk factors associated with recurrent deficiency.
Ongoing follow-up allows treatment plans to be adjusted according to clinical response and changing health circumstances.
Role of Pharmacies
Pharmacies play an important role in supporting access to vitamin D supplementation throughout Andorra.
A broad range of products is available, including drops, tablets, capsules, liquid formulations, and higher-dose therapeutic preparations.
Pharmacists frequently provide guidance regarding dosage, administration, treatment duration, and product selection.
This community-based support contributes to wider accessibility and reinforces public awareness regarding vitamin D deficiency prevention.
Affordability and Accessibility
Vitamin D supplementation is generally affordable and widely accessible within Andorra.
Lower-dose maintenance products can typically be obtained directly through pharmacies, while prescription formulations are available when clinically required.
The healthcare system provides access to medical consultation, testing, and treatment for individuals identified as being at risk of deficiency.
As a result, financial barriers are generally considered less significant than behavioural factors such as awareness, adherence, and long-term consistency of supplementation.
Healthcare System Response
Over the period 2014–2024, Andorra’s healthcare system increasingly integrated vitamin D assessment and management into routine preventive care.
Family physicians, paediatricians, endocrinologists, geriatric specialists, nurses, dietitians, and pharmacists all contributed to improving identification and treatment of deficiency.
This multidisciplinary approach has helped ensure that vitamin D deficiency is addressed as part of broader preventive healthcare rather than as an isolated nutritional issue.
Continued improvement in awareness, screening practices, supplementation adherence, and patient education remains central to future deficiency reduction efforts.
Key Findings
- Vitamin D testing is available through Andorra’s healthcare system when clinically indicated.
- Targeted screening is preferred over routine population-wide testing.
- Deficiency is primarily treated through oral vitamin D supplementation.
- Follow-up monitoring is commonly used for high-risk individuals.
- Pharmacies play an important role in supplement access and patient guidance.
- Affordability is generally not considered a major barrier to treatment.
- Vitamin D management has become increasingly integrated into preventive healthcare.
Comparisons with Neighboring Countries (France and Spain)
Regional Context
Andorra’s experience with vitamin D deficiency is best understood within the broader context of neighboring France and Spain.
Geographically, Andorra sits between southern France and northeastern Spain, sharing many of the same climatic, cultural, dietary, and lifestyle characteristics that influence vitamin D status.
Despite differences in population size and healthcare systems, all three countries face similar challenges relating to seasonal sunlight exposure, modern indoor lifestyles, dietary intake, and widespread vitamin D insufficiency.
As a result, public health strategies implemented in France and Spain have often influenced approaches adopted within Andorra.
Comparison with Spain
Spain provides one of the most striking examples of the disconnect between sunlight availability and vitamin D status.
Despite being one of Europe’s sunniest countries, research has reported widespread vitamin D insufficiency across the Spanish population.
Multiple studies have identified high prevalence rates among children, adolescents, adults, and older populations. Some reports suggest deficiency affects a majority of individuals in certain demographic groups.
Contributing factors include indoor lifestyles, reduced outdoor activity, sunscreen use, dietary patterns, and the absence of extensive food fortification programmes.
Given Andorra’s proximity to Spain and many shared lifestyle characteristics, these findings are considered highly relevant when evaluating vitamin D risks within the Principality.
Comparison with France
France has documented similar challenges despite its diverse geography and large population.
National surveys have consistently reported significant levels of vitamin D insufficiency across all age groups, with particularly high prevalence among older adults and vulnerable populations.
French public health authorities have responded through targeted supplementation strategies, clinical guidance, and preventive health recommendations focused on high-risk groups.
These measures have influenced healthcare practices across the region and have contributed to growing awareness of vitamin D deficiency among healthcare professionals in Andorra.
The French experience demonstrates that awareness alone is often insufficient to substantially improve population vitamin D status without broader preventive measures.
Fortification Policies: Southern vs Northern Europe
One of the most important international comparisons involves differences between southern and northern European countries.
Countries such as Finland and Sweden have implemented more systematic approaches to vitamin D fortification and supplementation, resulting in significantly higher average vitamin D levels despite receiving less annual sunlight than southern Europe.
By contrast, Andorra, France, and Spain have traditionally relied more heavily on natural sunlight, dietary intake, and targeted supplementation rather than broad food fortification.
This contrast has become increasingly important in public health discussions because it suggests that policy choices may influence vitamin D status as much as geography.
Key Observation
Countries with less sunlight but stronger fortification and supplementation policies often report better vitamin D status than sunnier countries relying primarily on natural exposure.
Healthcare Approaches
France, Spain, and Andorra all place significant emphasis on targeted supplementation rather than universal treatment.
Priority groups generally include infants, pregnant women, older adults, individuals with chronic illnesses, and people with limited sunlight exposure.
Healthcare providers in all three countries increasingly recognise vitamin D deficiency as an important preventive health issue, particularly in relation to bone health, healthy ageing, and overall wellbeing.
While approaches differ in detail, the overall direction of policy has become progressively more focused on prevention, awareness, and early intervention.
Lessons for Andorra
The experiences of France and Spain provide several important lessons for Andorra.
First, abundant sunshine alone does not guarantee adequate vitamin D status. Lifestyle, diet, public awareness, and healthcare practices play equally important roles.
Second, targeted supplementation programmes can significantly reduce severe deficiency among vulnerable groups, particularly infants and older adults.
Third, international evidence suggests that food fortification may represent an underutilised strategy capable of improving vitamin D status across entire populations.
Finally, sustained public education and healthcare engagement remain essential regardless of the specific policy tools adopted.
Key Findings
- Andorra shares many vitamin D challenges with neighboring France and Spain.
- High deficiency rates occur despite relatively abundant sunshine.
- Lifestyle and behaviour strongly influence vitamin D status.
- France and Spain rely primarily on targeted supplementation strategies.
- Northern European countries often achieve better vitamin D status through fortification.
- International experience suggests policy choices can be as important as geography.
- Andorra can continue to learn from both neighboring and northern European approaches.
Government Policies and Interventions in Andorra
Policy Development and Recognition
Over the period 2014–2024, Andorra increasingly recognised vitamin D deficiency as a relevant public health issue within broader discussions relating to nutrition, healthy ageing, disease prevention, and population wellbeing.
While Andorra has not adopted a standalone national vitamin D strategy, the issue has been progressively incorporated into healthcare guidance, preventive medicine programmes, nutritional recommendations, and public health initiatives.
This approach reflects a broader understanding that vitamin D deficiency should be addressed as part of comprehensive health promotion rather than as an isolated nutritional problem.
Integration into National Health Planning
Vitamin D considerations have increasingly been incorporated into wider health planning frameworks concerned with prevention, healthy ageing, chronic disease management, and quality of life.
Public health authorities have recognised that adequate vitamin D status contributes to multiple health objectives, including bone health, mobility, fall prevention, nutritional wellbeing, and healthy ageing.
As a result, vitamin D has become part of broader discussions concerning long-term healthcare sustainability and preventive medicine.
Clinical Practice Guidelines
Healthcare providers throughout Andorra increasingly utilise evidence-based clinical guidance when assessing and managing vitamin D deficiency.
Clinical protocols generally emphasise risk assessment, targeted testing, supplementation of vulnerable populations, and treatment of identified deficiencies.
Particular attention is given to infants, older adults, pregnant women, individuals with chronic illness, and patients with conditions affecting nutrient absorption.
These practices have become integrated into routine healthcare delivery across primary care, specialist services, and long-term care settings.
Public Awareness and Prevention
Government-supported public health messaging has focused on increasing awareness of vitamin D through broader educational initiatives relating to nutrition, healthy lifestyles, sun exposure, and disease prevention.
Public communication efforts have sought to balance the benefits of sunlight exposure for vitamin D synthesis with the need to minimise risks associated with excessive ultraviolet exposure.
This balanced approach has become a recurring theme in health promotion activities throughout the decade.
Support for High-Risk Groups
Government-supported healthcare services have prioritised prevention and treatment among groups most vulnerable to deficiency.
Particular focus has been directed toward:
- Infants and young children.
- Pregnant and breastfeeding women.
- Older adults.
- Individuals living in residential care facilities.
- People with chronic illnesses or malabsorption conditions.
- Individuals with limited sunlight exposure.
These groups are considered the most likely to benefit from supplementation, monitoring, and preventive interventions.
Supplement Availability and Healthcare Access
Government policy has also focused on ensuring that vitamin D supplementation remains widely available through healthcare providers and pharmacies.
Individuals diagnosed with deficiency can access appropriate treatment through established healthcare pathways, while preventive supplementation remains accessible for those seeking to maintain adequate vitamin D status.
This accessibility has helped reduce barriers to intervention and supports ongoing management of deficiency across the population.
Monitoring and Future Policy Considerations
Although Andorra has made progress in recognising and addressing vitamin D deficiency, the issue remains a continuing public health challenge.
Future policy discussions may include enhanced monitoring, expanded prevention programmes, strengthened nutritional education, and consideration of additional measures aimed at improving population vitamin D status.
International experience suggests that continued evaluation of supplementation practices, dietary strategies, and potential fortification initiatives may provide opportunities for further improvement.
Key Government Interventions (2014–2024)
- Recognition of vitamin D deficiency as a relevant public health issue.
- Integration into preventive healthcare and healthy ageing strategies.
- Development of clinical guidance for assessment and treatment.
- Public education regarding sunlight exposure and nutrition.
- Targeted support for vulnerable and high-risk populations.
- Maintenance of widespread access to supplementation and treatment.
- Ongoing evaluation of future prevention and policy options.
Schlussfolgerung
From 2014 to 2024, Andorra increasingly recognised vitamin D deficiency as a significant but largely preventable public health challenge.
Available evidence from Andorra and neighboring European populations indicates that vitamin D insufficiency remains widespread despite the country’s favorable climate and relatively abundant sunshine. Children, adolescents, older adults, individuals with limited outdoor exposure, and certain clinical populations continue to face elevated risks of deficiency.
The health implications of inadequate vitamin D status extend beyond bone health and include impacts on muscle function, healthy ageing, immune resilience, and overall wellbeing. These consequences have contributed to growing recognition of vitamin D as an important preventive healthcare priority.
During the period covered by this report, Andorra made measurable progress through increased awareness, improved clinical guidance, wider use of supplementation, and stronger integration of vitamin D considerations into preventive healthcare practices.
Public health initiatives promoting safe sunlight exposure, nutritional education, and support for vulnerable populations have helped strengthen the national response to vitamin D deficiency.
Nevertheless, vitamin D insufficiency remains common, particularly during winter months when ultraviolet exposure is limited and natural vitamin D production declines significantly.
Current strategies rely primarily on education, supplementation, healthcare engagement, and individual behaviour. While these approaches have generated important benefits, they also depend heavily on awareness, adherence, and ongoing participation by the public.
International comparisons suggest that additional policy tools, including expanded fortification, enhanced monitoring, and broader preventive programmes, may offer opportunities to further improve vitamin D status across the population.
Looking forward, Andorra is well positioned to continue strengthening its response through a combination of evidence-based healthcare, public education, nutritional policy, and targeted interventions for at-risk groups.
The experience of 2014–2024 demonstrates that vitamin D deficiency is neither inevitable nor unavoidable. With sustained attention and coordinated action, Andorra can continue reducing the burden of deficiency and improving the health and wellbeing of its population.
Final Key Findings
- Vitamin D deficiency remains a significant public health issue in Andorra.
- Children, adolescents, and older adults experience the highest levels of risk.
- Strong seasonal variation contributes to widespread winter insufficiency.
- Healthcare awareness and supplementation practices improved significantly between 2014 and 2024.
- Current policy relies primarily on education, supplementation, and preventive healthcare.
- Food fortification remains limited compared with several northern European countries.
- Further improvements may be achieved through expanded prevention, monitoring, and nutritional strategies.
References and Sources
The following sources were used in the preparation of this report. References include academic publications, government reports, public health guidance, international research, and supporting documentation relevant to vitamin D deficiency, supplementation, public health policy, and population health trends.
Academic and Scientific Sources
- Cashman, K. D., et al. (2016). Vitamin D deficiency in Europe: pandemic? American Journal of Clinical Nutrition, 103(4), 1033–1044.
- Campillo, F., et al. (2024). Vitamin D levels in an area of low solar radiation in the north of the Iberian Peninsula. Revista de Pediatría de Atención Primaria.
- Navarro Valverde, C., & Quesada Gómez, J.M. (2014). Vitamin D deficiency in Spain: Reality or myth? Revista de Osteoporosis y Metabolismo Mineral.
- Rodríguez-Rodríguez, E., et al. (2019). Deficiencia en vitamina D de la población española. Importancia del huevo. Nutrición Hospitalaria.
- Amrein, K., et al. (2020). Vitamin D deficiency 2.0: an update on the current status worldwide. European Journal of Clinical Nutrition.
- Bruins, M., & Van Dael, P. (2019). The Role of Nutrients in Reducing the Risk for Non-Communicable Diseases During Aging. Nutrients.
- Bleizgys, A., et al. (2022). Identifying factors associated with COVID-19 related deaths. Frontiers in Public Health.
Government and Institutional Sources
- Government of Andorra / Andorra Research + Innovation. 2nd Andorran Nutritional Survey 2017–2018.
- Andorran Ministry of Health. Safe Sun Exposure and Health Promotion Guidance (2019–2021).
- ANSES – French Agency for Food, Environmental and Occupational Health & Safety. Vitamin D Recommendations and Intake Guidance.
- Government of Andorra. Action Plan 2020–2023 – Horizon 23.
Public Health and Industry Reports
- Glanbia Nutritionals. A Deep Dive into the European Supplement Market.
- Andorra Vitamin D Market Report (2025–2031).
- JPI PEN. Vitamin D Food Fortification in European Countries.
Comparative Country Studies
- Vitamin D Deficiency in Austria (2014–2024) – Comprehensive Overview.
- Vitamin D Deficiency in France (2014–2024) – Comprehensive Overview.
Online Resources
- Revista de Pediatría de Atención Primaria – Vitamin D levels in an area of low solar radiation in the north of the Iberian Peninsula
- La Razón – El 75% de los españoles tiene deficiencia de Vitamina D
- Nutrición Hospitalaria
- Frontiers in Public Health
- European Journal of Clinical Nutrition
- Andorra Research + Innovation
- Government of Andorra
- JPI PEN – Vitamin D Food Fortification in Europe
Reference Note
Sources were selected to provide a balanced overview of vitamin D deficiency prevalence, supplementation practices, public health interventions, dietary strategies, and international comparisons relevant to Andorra between 2014 and 2024.
Where Andorra-specific data were unavailable, evidence from neighboring Spain, France, and comparable European populations was used to provide context and support interpretation.