一、要保证足够的蛋白质。蛋白质是构成人体细胞的主要原料。而老年人体内细胞的破坏量大，对蛋白质的需要量多；如果补充不足，细胞再生能力降低，抵抗细菌、病毒的免疫物质减少，可发生多种疾病。因此，老年人应多吃一些瘦肉、鱼和蛋类等高蛋白食物。二、要保证维生素的摄人 First, to ensure adequate protein. Proteins constitute the main raw material of human cells. The older cells in the destruction of the large amount of protein on the need for more; if insufficiently replenished, reduced cell regeneration, resistance to bacteria, reduce the immune substances of the virus, can occur a variety of diseases. Therefore, the elderly should eat some lean meat, fish and eggs and other high protein foods. Second, we must ensure that the intake of vitamins