If you’re fact-checking the viral headline “Doctors reveal that eating cabbage causes…”, the missing part is crucial. But if the claim is that cabbage causes thyroid disease or hypothyroidism, that claim is mostly misleading.
🥬 Does cabbage harm the thyroid?
Cabbage is a cruciferous vegetable and contains compounds sometimes called goitrogens, which can interfere with iodine use under certain circumstances. However, a systematic review of 123 studies found that the vast majority of evidence does not support the idea that normal consumption of cruciferous vegetables harms thyroid function in humans, particularly when iodine intake is adequate. (PubMed Central (PMC))
Mayo Clinic also notes that there isn’t evidence that people with hypothyroidism need to avoid particular foods to make their thyroid work better. (Mayo Clinic)
When could cabbage be a concern?
The situation is different with very large amounts of raw cruciferous vegetables, particularly in someone who has inadequate iodine intake. The compounds are more relevant when foods are consumed raw and in unusually large quantities. Cooking reduces their goitrogenic activity. (DOI.org)
So eating ordinary portions of cooked cabbage is not something most people need to fear.
Other effects of eating cabbage
Cabbage can cause gas, bloating, or abdominal discomfort in some people because it contains fermentable carbohydrates and fiber. (NIDDK)
It also provides useful nutrients, including vitamin K; vitamin K is important for normal blood clotting and bone health. (ODS)
⚠️ One important medication issue
If you take warfarin, don’t suddenly make a major change in how much cabbage and other vitamin-K-rich vegetables you eat. The important thing is usually to keep your vitamin K intake consistent and follow your clinician’s advice.
Bottom line: Cabbage is generally a healthy food. The claim that eating cabbage normally “causes” thyroid disease is not supported by the evidence. The concern mainly applies to unusual, very high intake of raw cruciferous vegetables combined with inadequate iodine.
If you paste the rest of the “Doctors reveal that eating cabbage causes…” headline, I can fact-check the exact claim.
