豆腐是富有营养的保健佳品,但是不能天天吃,也不能一次吃得过量,尤其老年人,更需要注意。通常情况下,人吃进体内的植物蛋白质,经过代谢,最后大部分成为含氮废物,由肾脏排出体外。人进入老年后,肾脏排泄废物的功能下降,在这种情况下,老年人大量吃豆腐,摄取过多的植物蛋白质, Tofu is nutritious health care products, but can not eat every day, can not eat too much, especially the elderly, more need to pay attention. Under normal circumstances, people eat plant protein in the body, after metabolism, most of the last to become nitrogenous waste, excreted by the kidneys. After entering the elderly, the function of renal excretion of waste decreased, in this case, the elderly eat plenty of tofu, excessive intake of plant protein,