Hypothyroidism is the abbreviation of hypothyroidism, hypothyroidism can eat fish, and there will be no adverse effects. Hypothyroidism is a disease in which the synthesis and secretion of thyroid hormones are reduced, leading to a decrease in basal metabolic rate and a decrease in sympathetic excitability, and patients may experience clinical symptoms such as slow thinking, memory loss, increased sleep, and constipation. Patients with hypothyroidism do not need strict dietary contraindications, nor do they need to limit the intake of fish food. Hypothyroidism patients may have elevated blood lipids, pay attention not to eat excessively greasy food and fatty food, and pay attention to a light diet. For hypothyroidism caused by Hashimoto’s thyroiditis, it is recommended not to consume too much iodine-containing seafood, such as kelp and nori, etc. Limiting iodine intake may help to stop the progression of autoimmune destruction of the thyroid gland. For the treatment of hypothyroidism, it is recommended to consult the endocrinology department of a regular hospital and follow the doctor’s instructions for standardized treatment.