Nutrition
How do vegans get enough iodine?
Short answer
Adults need about 150 µg of iodine a day (220 µg in pregnancy, 290 µg while breastfeeding). Vegans do not get iodine from dairy and fish, so it has to be planned: iodised salt at home or a supplement.
Salt in processed foods is usually not iodised, and sea and Himalayan salts often contain no iodine – check the pack. Iodised salt is not an invitation to add more salt; use it in moderation. The alternative is an iodine supplement (in pregnancy and breastfeeding the doctor sets the dose).
Seaweed has very variable iodine content: kelp and kombu can easily give too much, which harms the thyroid. Do not rely on it as your main source. If you have a thyroid condition, agree your iodine intake with your doctor.