As the saying goes, “Porridge brings health and longevity to the senior.” Since the ancient time, many elderly people have taken this sentence as wisdom of keeping fit. Indeed, the digestive system of the elderly people has been depressed and porridge is really good for digestion. But if they have porridge every day, especially those who have porridge twice or three times a day, their digestive system will not work so well.
If the elderly people have porridge in a long term, they would easily get nutritional deficiencies. Because the porridge people used to have is monotonous in composition. For example, the North porridge is mainly based on the cereal like rice, millet and so on; while the South porridge is added few vegetables, meat, eggs or fruit, it is still insufficient of the nutritional contents of the subsidiary food like vegetable and meat when comparing with the a normal meal. In addition, many elderly people would only have porridge with a small amount of oil-less Lin as the porridge is relatively enough. If things go on like this, the 40 kinds of essential daily nutrition for human body would be deficient. Besides, the process of chewing is actually the process of digestion. Chewing rice promotes saliva secretion, and the saliva enzymes have a preliminary digestion of starches in food. However, after the mixed boiled of cereals and water and forming as chyme, it would be digested by gastric field without the effects of saliva. The saliva has functions of neutralizing stomach acid and repairing the gastric mucosa. But when people eat porridge, their saliva is almost not produced, not good for protecting the stomach. Moreover, it needs less chewing when having porridge, which reduces activity of teeth, and even accelerate the degeneration of the chewing organs of the elderly people. And food like porridge consists less contents of fiber, which is also not good for defecation of elderly people.