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中老年人中普遍存在着对胆固醇的畏惧感,不敢吃动物油,更怕碰肥肉,长期单吃植物油。其实,这种认识与做法是不科学的。医学专家指出,成人每天必须从胃肠道摄入0.5克胆固醇,再加上自体合成1-克,才能满足需要。如果血液中胆固醇长期处于较低水平,是发生癌症和脑卒中的一个危险因素。由此可见,老年人应吃适量的动物脂肪。老年人食用植物油和动物油的最佳比值是:植物油为1,动物油应是0.3～0.5。尤其要指出的是,菜籽油虽然是植物油,但它富含一种长链脂肪酸,叫做芥
In the elderly there is widespread fear of cholesterol, not to eat animal oil, even more afraid to touch the fat, long-term single to eat vegetable oil. In fact, this understanding and practice is unscientific. Medical experts point out that adults must take 0.5 g of cholesterol daily from the gastrointestinal tract, combined with 1 g of autologous synthesis, to meet their needs. Long-term low levels of cholesterol in the bloodstream are a risk factor for cancer and stroke. Thus, the elderly should eat the right amount of animal fat. The best ratio of consumption of vegetable oils and animal oils for the elderly is 1 for vegetable oils and 0.3 to 0.5 for animal oils. In particular, rapeseed oil is a vegetable oil, but it is rich in a long-chain fatty acids called mustard