Is it okay for the elderly to eat more meat?

　　In modern people’s daily diet, protein intake is already too much. Foods containing animal protein are mainly chicken, duck, fish, pig, beef, mutton and other meats. The protein content of cooked meat can be as high as about 60%. Therefore, if you eat about 100 grams of meat a day, your protein intake will have reached about 60 grams. The normal protein requirement is 1 gram per kilogram of body weight, which means that an adult's daily intake is preferably less than 100-150 grams.

　　In addition, a diet high in animal protein can easily cause calcium deficiency. Experiments have shown that a daily intake of 80 grams of animal protein will cause a loss of 37 mg of calcium; when the protein intake is increased to 240 grams per day, even if an additional 1,400 mg of calcium is supplemented, the final total calcium loss will still reach more than 100 mg per day. This shows that calcium supplementation cannot prevent bone loss caused by a high-protein diet.