In brief:
- In Estonia, a varied diet usually covers vitamin A needs — especially liver, dairy products and eggs.
- Beta-carotene from vegetables is an additional source, but its bioavailability is lower than that of animal-derived retinol.
- Clinical deficiency is rare in Estonia, but the risk is higher in young children, older people and those on a long-term strict plant-based diet.
- An overdose of this fat-soluble vitamin is possible — chronic intake above 3000 μg RAE per day damages the liver and bones.
Vitamin A in Estonia comes mainly from animal-based foods, and in winter getting enough requires careful meal planning. Retinol — the bioavailable form of vitamin A — supports vision, the immune system and the health of epithelial tissues. The overview below explains when the typical Estonian diet covers your needs and when it is worth considering a supplement.
What is vitamin A and where can you get it in Estonia?
Vitamin A occurs in food in two forms: as preformed retinol in foods of animal origin, and as beta-carotene (provitamin A) in vegetables and fruit. Retinol is absorbed efficiently from the digestive tract, whereas beta-carotene is converted into retinol with variable efficiency — roughly 3–6 times less efficiently than animal-derived retinol (EFSA, 2015).
On the Estonian table, the main animal sources are:
- Liver (beef or chicken): 100 g contains over 5000 μg retinol activity equivalents (RAE), which exceeds an adult’s daily requirement several times over (NIH ODS, 2023)
- Whole milk and curd cheese (kohupiim): 150–200 μg RAE per 100 g
- Eggs (especially the yolk): about 150 μg RAE per 100 g
- Fatty fish (salmon, trout): smaller amounts as retinol
Plant sources contain beta-carotene: carrots, pumpkin, sweet potato, spinach and kale. Bioavailability rises significantly when they are eaten with fat, such as olive oil or nuts.
Like vitamin D and other fat-soluble vitamins, vitamin A needs fat to be absorbed — a fat-free diet significantly lowers uptake (Blomhoff and Blomhoff, 2006).
How much vitamin A does a person in Estonia need per day?
EFSA sets the recommended daily intake for adults at 750 μg RAE for men and 650 μg RAE for women; breastfeeding mothers have a higher requirement — 1300 μg RAE (EFSA, 2015). The Estonian Health Board follows these EFSA reference values.
The tolerable upper intake level (UL) for adults is 3000 μg RAE per day. Chronically exceeding it is linked to liver toxicity and reduced bone density (NIH ODS, 2023). Staying under the upper limit is especially important in pregnancy, because excess retinol is teratogenic.
By contrast, with water-soluble vitamins such as B vitamins and vitamin C, the excess is excreted in urine and does not accumulate in the body — the distinctive feature of fat-soluble vitamins is precisely that reserves are stored in the liver and adipose tissue, and any excess does not leave the body automatically.
Is vitamin A deficiency a real risk in Estonia?
Clinical deficiency — night blindness, dry skin, frequent infections — is rare in developed countries (Sommer, 2008). In the Estonian context, however, there are risk groups:
- Young children, whose diet is limited and does not include enough dairy products or a variety of vegetables
- Older adults, whose food choices are narrower and whose absorption declines with age
- People who have followed a strict plant-based diet for a long time, relying solely on beta-carotene
- Patients with absorption disorders (celiac disease, Crohn’s disease)
Tanumihardjo (2011) stresses that serum retinol below 0.7 μmol/l indicates deficiency, but liver stores buffer plasma levels for a long time — subclinical deficiency often goes undetected until the stores are finally depleted.
Winter nutrition in Estonia requires particular attention: fewer fresh orange and green vegetables are eaten, while foods with animal-derived retinol (dairy products, eggs) usually remain on the menu. This partly balances out the seasonal fluctuation, but when variety shrinks, risk groups can still end up at risk.
In parallel, it is worth keeping an eye on vitamin D levels — in Estonia’s climate, vitamin D deficiency is common in winter, and both fat-soluble vitamins support the immune system synergistically (Blomhoff and Blomhoff, 2006).
Is a vitamin A supplement justified in Estonia?
For most Estonian adults eating a mixed diet, vitamin A from food covers the requirement (EFSA, 2015). A supplement is justified in the following cases:
- In pregnancy, when the amount from food is scarce — but only on a doctor’s advice, because an overdose harms the fetus
- In absorption disorders, based on an individual medical assessment
- On a strictly restrictive diet that excludes animal sources and where beta-carotene uptake is low
Under normal circumstances, a preventive supplement is neither necessary nor advisable. A fat-soluble vitamin accumulates in the body, and the consequences of chronic overdosing — liver damage, headache, bone thinning — are more serious than with water-soluble vitamins (NIH ODS, 2023). For any long-term supplement course, consulting a doctor is recommended.
References
- Blomhoff R, Blomhoff HK (2006). Overview of retinoid metabolism and function. J Neurobiol. 66(7):606–30. PMID: 16688755
- EFSA NDA Panel (2015). Scientific Opinion on Dietary Reference Values for vitamin A. EFSA Journal. 13(3):4028. DOI: 10.2903/j.efsa.2015.4028
- NIH Office of Dietary Supplements (2023). Vitamin A: Fact Sheet for Health Professionals. https://ods.od.nih.gov/factsheets/VitaminA-HealthProfessional/
- Sommer A (2008). Vitamin A deficiency and clinical disease: an historical overview. J Nutr. 138(10):1835–9. PMID: 18806089
- Tanumihardjo SA (2011). Vitamin A: biomarkers of nutrition for development. Am J Clin Nutr. 94(2 Suppl):658S–665S. PMID: 21715511
Frequently asked questions
What is the recommended daily amount of vitamin A for adults in Estonia?
EFSA recommends 750 μg RAE per day for men and 650 μg RAE for women. Breastfeeding mothers need more: 1300 μg RAE. The Estonian Health Board follows these reference values.
Can you get enough vitamin A from carrots and pumpkin?
Beta-carotene from vegetables is a good additional source, but its bioavailability is 3–6 times lower than that of animal-derived retinol. For better absorption, eat these foods together with some fat. On a strict plant-based diet, you may need to keep a closer eye on your RAE intake.
Is it worth taking a vitamin A supplement in winter in Estonia?
For most adults, no: dairy products, eggs and regular liver consumption cover the requirement even in winter. A supplement is justified only in cases of proven deficiency, an absorption disorder or a very restricted diet, preferably on a doctor’s advice.
Is a vitamin A overdose dangerous?
Yes. Chronic intake above 3000 μg RAE per day can damage the liver, reduce bone density and endanger the development of the fetus during pregnancy. As a fat-soluble vitamin, it accumulates in the body and is not excreted in the urine in excess, unlike vitamin C or the B vitamins.
How are vitamin A and vitamin D related?
Both are fat-soluble vitamins that work synergistically to support the immune system and the health of epithelial tissues. In Estonia’s climate, vitamin D deficiency is common in winter. Monitoring the levels of both makes sense, but you should not take supplements without first establishing a need.
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