Serum calcitonin is a hormone secreted by thyroid follicular cells that, when elevated for some reason, increases the excretion of calcium by the kidneys and lowers blood calcium concentrations. Endemic goiter is a type of goiter. In the early stages, there are no obvious clinical symptoms. The thyroid gland is mildly to moderately diffusely enlarged, soft and painless. Very few significantly enlarged cases may show symptoms of pressure, such as dyspnea, dysphagia, hoarseness, and irritating cough. A retrosternal goiter may have symptoms of esophageal or superior vena cava compression. So what are the dietary contraindications for patients with elevated serum calcitonin levels? The following is a brief introduction: Chinese medicine believes that “medicine and food have the same origin”. The drug treatment, the emphasis on attacking the evil. Food therapy, the emphasis is on supporting the righteous. As early as 2000 years ago, “Su Wen – dirty qi method of time” has been recorded in “poison to attack evil, five grains for nourishment, five fruits for help, five animals for benefit, five dishes for the full, the smell combined and served, in order to replenish essence and benefit qi”. This means that while using drugs to treat illnesses, attention should also be paid to using food (five grains, five fruits, five animals and five vegetables) to replenish the body’s positive energy and restore health. In patients with increased serum calcitonin levels, if they can use medication and at the same time choose food to nourish their body in a reasonable manner, so that medication and diet can work together to “attack the evil” (treat the disease) and “nourish the righteous” (nourish the essence). “(nourishing the essence) to restore the body to health. Diet for patients with increased serum calcitonin levels: 1. It is advisable to take enough calories and nutrients such as sugar, protein and vitamin B. 2. 2, eat peanuts and its products, has the effect of inhibiting the synthesis of thyroxine. The Chinese herbs soursop, white mustard seeds, and vegetable telephones have similar effects. 3, according to clinical evidence, it is appropriate to eat the following foods: watermelon, celery beans, celery, goldenseal and other cool foods; fungus, lily, mulberry, wolfberry, turtle, duck and other nourishing foods; yam, gorgonian, dates and other spleen food. 4, avoid eating chili, ginger, mutton, sparrow, strong tea, strong coffee and other warm or stimulating food.