If the elderly want to live longer, they should limit their food intake appropriately

　　In the late 1960s, American gerontologist Mark Wrighton made a feed containing 20% ​​protein and 5% vegetable oil and fed it to two groups of white mice: the first group was fed a normal diet of 20 kilocalories per day, and the second group was fed a feed of 10 kilocalories. As a result, most of the mice in the second group lived more than twice as long as the first group.
　　
　　The test once again shows that limiting the body's caloric intake can delay aging and extend lifespan on the premise of ensuring adequate nutrition.
　　
　　Why can proper food restriction help you live longer?
　　
　　American immunologist O'Full pointed out that food restriction can keep the body's immunity strong in old age and delay the timing disorder of the thymus, the central immune organ. Some biochemists' organ tests on mice on a restricted diet have shown that the accumulation of lipofuscin in major organs such as the heart and brain is much lower in these mice when they are old than in mice of the same age on a normal diet.
　　
　　According to experiments conducted by Rolle Woolford, MD, University of California, food restriction can lower body temperature by 2°C to 3°C. Body temperature has a decisive impact on lifespan, and food restriction is an effective method to naturally lower body temperature.
　　
　　“"McCard Effect" tells us that China elderly It is very important to pay attention to proper diet: on the one hand, it is necessary to reduce animal fat, cholesterol, high sugar, and high starch foods; on the other hand, it is necessary to appropriately increase foods with high protein and vitamin content. Appropriate dieting for middle-aged and elderly people must be carried out on the premise of ensuring nutrition. This is extremely important.
　　
　　Recently, Professor Yu Omura of Kyushu University in Japan found that after eating too much, a substance called "fibroblast growth factor" in the brain increased tens of thousands of times compared with before eating. This substance can cause the proliferation of capillary endothelial cells and fat cells, and can promote cerebral atherosclerosis. It is the main substance that causes premature aging of the brain.
　　
　　Professor Yu Omura pointed out that there are currently no effective drugs to control the increase of "fibroblast growth factor" when full. However, it is entirely possible to reduce the production of "fibroblast growth factor" in the brain and delay cerebral vascular sclerosis and brain aging by limiting the amount of food.

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