Do vegans get enough iodine?
Besvaret 27. oktober 2026
Often not. A systematic review of 15 studies covering 127,094 adults in industrialised countries found that vegans are at greater risk of low iodine levels, deficiency and too little intake than people on less restrictive diets.
Iodised salt does not solve it on its own. In a Danish study included in the review, 55 of 70 vegans fell short of the recommendation even though household salt is iodised, perhaps because they ate less salt and fewer salty processed foods. Danish rules require household salt and salt in bread to contain 20 mg of iodine per kg. The Danish National Food Institute at DTU concludes that vegetarians and vegans risk too little iodine unless they take supplements or eat fortified foods.
Seaweed is not a safe fix, as it can contain far too much iodine and other unwanted substances.
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- Meget stor gennemgang fra University of Nottingham, 2020Samler mange studier · Systematisk gennemgang · 127.094 voksne på tværs af femten inkluderede studierVegans, Vegetarians, and Omnivores: How Does Dietary Choice Influence Iodine Intake? A Systematic Review
- Notat fra DTU Fødevareinstituttet om vegetarkost, 2025Samler mange studier · RapportLakto-ovo-vegetarisk kost 2-70+ år: Opdatering af fagligt grundlag for De officielle Kostråd i forhold til Nordiske Næringsstofanbefalinger 2023
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