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Goitrogens
Compounds in raw cruciferous vegetables, soy, and cassava that can reduce iodine uptake by the thyroid.
Who reacts
Mostly people with iodine deficiency who eat very large amounts. Normal intake of cooked vegetables shows little effect in studies.
Typical onset
24 hours to 72 hours after you eat it
Linked symptoms
FatigueWeak evidence
Low moodWeak evidence
Where you find it
High:Kale (raw) · Cabbage (raw)
Medium:Soy / tofu / soy milk · Broccoli · Cauliflower
Low:Sauerkraut / kimchi
Sources
- Felker et al. 2016, Nutr Rev 74(4):248 — goitrin and thiocyanate from brassica vegetables and thyroid risk