It is best to eat things with hard shells in the sea to supplement calcium, such as shrimps and crabs. Pay attention to the sun (9- 1 1 in the morning and 15- 17 in the afternoon) and the balance of potassium, calcium, sodium and magnesium in the body. Don't just make up one. Zinc deficiency mostly occurs in children and adults, but the performance is not obvious. Zinc supplementation is mainly through diet. Foods with high zinc content in food include oysters, malt, lean meat, fish, milk, walnuts, peanuts, sesame seeds, laver and animal liver. As long as you eat more of the above foods at ordinary times, your body will not be short of zinc, and even if it is already short of zinc, it will be replenished soon.