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炎夏酷暑,人们的饭量一般都会减少,所谓“瘦夏”。这是因为气温高,使中枢神经对饮食调节中枢产生抑制作用,消化液和消化酶的分泌减少,引起食欲下降,食量减少。同时,由于大量出汗,随汗液排出体外的水溶性营养素亦增加,于是食物供给的营养素就达不到生理所需要的标准,人就会消瘦、乏力。夏天,儿童还喜欢吃冷食和冷饮,影响正餐进食。冷饮营养成分甚微,加上儿童的肠胃功能较弱,频繁的过冷剌激会影响食欲,引起胃肠不适,容易出现营养不良。
Summer heat, people’s appetite is generally reduced, the so-called “thin summer.” This is because the high temperature, so that the central nervous system to inhibit the central diet, digestive juice and digestive enzyme secretion decreased, causing loss of appetite, reduced appetite. At the same time, due to a large number of sweating, with the sweat excreted water-soluble nutrients also increased, so the nutrient supply of food to reach the required standard of physiology, people will lose weight, fatigue. Summer, children also like to eat cold and cold drinks, affecting dinner eating. Cold nutrition is very small, with children’s gastrointestinal function is weak, frequent cold stimulation will affect the appetite, gastrointestinal discomfort, prone to malnutrition.