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22 clusters · 52 sources · 86 days · First seen · Last updated

Health risks of vitamin deficiency and supplementation

Overview

Medical experts continue to warn against the unregulated use of dietary supplements, emphasizing that ‘natural’ products can pose significant health risks. Recent scrutiny has focused on Vitamin D quality and dosage. A study by consumer magazine Öko-Test of 23 preparations found that many supplements contained excessively high daily dosages, with only one of four tested Vitamin D drop products receiving a ‘good’ rating. International guidance on Vitamin D intake varies significantly, with recommendations ranging from 400 IU by the UK’s NHS to 2,000 IU suggested by the Endocrine Society.

Newer warnings highlight the danger of ‘dose stacking,’ where individuals take multiple products containing the same ingredient. Fat-soluble vitamins (A, D, E, and K) are particularly hazardous because they accumulate in the body, potentially causing toxicity, kidney stones, or increased hemorrhage risks. Professor Zekayi Kutlubay of Istanbul University Cerrahpaşa Faculty of Medicine has cautioned that high doses of Vitamin D, Vitamin C, and collagen taken to maintain appearance can lead to poisoning, including liver and kidney failure. He advises that physicians must determine specific needs rather than individuals purchasing supplements based on hearsay.

Regarding deficiency, dermatology specialist Dr. Ayda Kart Aşkar warns that reduced winter sunlight can cause Vitamin D drops that exacerbate dermatological conditions. These include thickening psoriasis plaques, increased eczema attacks, oily dandruff, and seasonal hair loss. Beyond skin issues, deficiencies are linked to decreased bone density, muscle weakness, and mood fluctuations such as depression or anxiety.

Entities

National Institutes of Health · Universitat Oberta de Catalunya · Antalya · EatingWell · Erin Person

Timeline

  1. [HEALTH] 3 sources
    Medical expert warns against excessive vitamin and supplement use

    Professor Zekayi Kutlubay warns that excessive vitamin and supplement use for aesthetic purposes can cause poisoning, liver, and kidney failure, urging medical consultation instead of self-prescription.

  2. [HEALTH] 3 sources
    Health risks associated with excessive consumption of certain foods and supplements

    Experts warn that overconsuming healthy foods like soy and kale, or taking excessive dietary supplements, can lead to liver damage, nutrient imbalances, and interference with medications.

  3. [HEALTH] 2 sources
    Nutritional supplements pose health risks without professional guidance

    Experts warn that taking supplements like creatine and whey protein without professional guidance can cause toxicity, nutrient imbalances, and health risks, especially when products are counterfeit.

  4. [HEALTH] 9 sources
    D vitamin deficiency linked to skin and hair issues in winter

    Medical experts warn that lower winter vitamin D levels can trigger psoriasis, eczema, and hair loss, while also affecting bone density and mental health.

  5. [HEALTH] 2 sources
    Dietary supplements that may pose risks to liver health

    Health experts warn that concentrated dietary supplements, including green tea extract, high doses of Vitamin A, and pharmacological levels of Niacin, can cause liver inflammation and damage.

  6. [HEALTH] 2 sources
    Medical experts warn against excessive vitamin and supplement use

    Medical experts warn that excessive use of vitamins and dietary supplements for skin health can cause serious kidney and liver damage.

  7. [HEALTH] 3 sources
    Health risks of excessive vitamin and supplement use

    Experts warn of the health risks associated with improper vitamin supplement use, including digestive issues and kidney stones caused by excessive intake of substances like Vitamin C.

  8. [HEALTH] 4 sources
    Nutrition and supplement safety: Benefits of organic food and risks of vitamin combinations

    Experts emphasize the benefits of organic nutrition while warning that high doses of combined Vitamin K and E supplements may increase blood clot and kidney risks.

  9. [HEALTH] 2 sources
    Safety guidelines for combining dietary supplements and prescription medications

    Health experts warn that dietary supplements can interact dangerously with prescription drugs, potentially affecting blood clotting, liver function, and medication absorption.

  10. [HEALTH] 2 sources
    Health experts warn of risks from unnecessary dietary supplements

    Health experts and consumer advocates warn that dietary supplements and energy shots are often unnecessary for healthy individuals and can pose risks, such as liver damage from Vitamin A overdose in children.

  11. [HEALTH] 3 sources
    Health experts warn of risks associated with dietary supplement overuse

    Health experts warn that dietary supplements can pose risks, noting that calcium and biotin can interfere with medication absorption and laboratory test accuracy despite their natural origins.

  12. [HEALTH] 2 sources
    Health risks of unnecessary vitamin and multivitamin supplementation

    Health experts warn that unnecessary vitamin and multivitamin supplementation can cause adverse effects, including increased mortality risks and organ damage, rather than improving longevity.

  13. [HEALTH] 2 sources
    Vitamin supplementation: Benefits for bone health and risks of overdose

    Experts advise targeted vitamin D supplementation for bone health in aging populations while warning that excessive vitamin intake through supplements can increase risks, such as lung cancer.

  14. [HEALTH] 2 sources
    Health risks of self-administering high-dose vitamin supplements

    Medical experts warn that self-administering multiple vitamin supplements can lead to dangerous dose stacking, potentially causing kidney damage, liver issues, and nerve toxicity.

  15. [HEALTH] 2 sources
    Health risks associated with improper dietary supplement use

    Experts warn that improper use of dietary supplements, such as exceeding doses or combining similar products, can lead to toxicity, kidney issues, and gastrointestinal problems like constipation.

  16. [HEALTH] 2 sources
    Immune health: Experts advise balanced diet over supplements

    Experts advise that a balanced diet is more effective for immune health than artificial boosters, warning that supplements lack proven benefits for those without nutritional deficiencies.

  17. [HEALTH] 2 sources
    Vitamin D supplements face scrutiny over quality and dosage

    A consumer test by Öko-Test found limited high-quality Vitamin D drops, while medical experts highlight varying international daily dosage recommendations and individual nutritional needs.

  18. [HEALTH] 2 sources
    Dietary supplements: Medical experts advise targeted use over routine supplementation

    Medical experts advise against universal dietary supplementation during seasonal transitions, recommending instead a targeted approach for specific deficiencies in vitamin D, B12, and iron.

  19. [HEALTH] 2 sources
    Health experts warn against overreliance on dietary supplements

    Medical experts warn that autumn supplement trends, including vitamin D and magnesium, are not substitutes for addressing underlying health issues like stress, poor sleep, or medical conditions.

  20. [HEALTH] 3 sources
    Medical experts warn against unsupervised supplement use

    Medical professionals warn that unsupervised dietary supplement use can cause organ damage and digestive issues, emphasizing the need for professional guidance to avoid harmful drug interactions.

  21. [HEALTH] 7 sources
    Health experts warn of vitamin deficiency and supplement risks

    Health experts warn of the risks of both vitamin deficiencies and over-supplementation, noting that excessive Vitamin B12 or D can be harmful while Vitamin D deficiency remains widespread.

  22. [HEALTH] 2 sources
    Health expert warns of risks associated with dietary supplements

    Health expert María José Alonso warns that dietary supplements are not inherently harmless and can cause toxicity or nutritional imbalances if used without medical guidance or to replace a balanced diet.

Sources

24sata.hr · abendblatt.de · ad-hoc-news.de · augsburger-allgemeine.de · beneficiosnaturais.com.br · bienpublic.com · bizimsivas.com.tr · borba.me · borncity.com · click.ro · clickpentrufemei.ro · correiokianda.info · cumhuriyet.com.tr · doanhnghiephoinhap.vn · doctorulzilei.ro · dzienmezczyzny.pl · eldiario.com · eldiariony.com · estrepublicain.fr · etv.me · eurodressage.com · gazetedamga.com.tr · guneydoguekspres.com · haber7.com · hablandoenplata.es · heartbeats.jp · heraldstandard.com · hopkinsmedicine.org · ikz-online.de · index.hr · ininsubria.it · kaipkada.lt · karar.com · kienthuc.net.vn · kutahyaekspres.com · medonet.pl · money.ro · morgenpost.de · nrz.de · observatordetimis.ro · priekavos.lt · quest.nl · safakgazete.com · sondakika.com · telemedicinamorsch.com.br · thueringer-allgemeine.de · tlz.de · top1health.com

This summary has been updated 20 times: see revision history