Smoking and drinking are prohibited.
(1) Taboo spicy food: pepper, raw onion, raw garlic;
(2) Taboo seafood: kelp, shrimp, hairtail;
(3) taboo strong tea, coffee, tobacco and alcohol;
(4) Keep calm and prevent fatigue.
Eat more of the following foods: broccoli, cabbage sprouts, cabbage, cauliflower, mustard leaves, peaches, pears, carrots, soybeans, spinach and turnips. These foods help to suppress thyroid hormones.