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人的食道壁由粘膜组成,非常娇嫩,只能耐受50～60℃的温度,超过这个温度的范围,食道的粘膜就会被烫伤。刚沏好的茶水,新煮好的粥,温度高达80～90℃。如果吃喝这样的食物或茶水,会烫伤食道壁,甚至形成浅表溃疡。为了及时修补这些损伤,食道粘膜的上皮细胞就要加快增殖。如果反复的烫伤—修复,食道粘膜就会发生质变,发展成癌瘤。咀嚼是为了将食物加工成糊状团块,便于消化
The human esophageal wall consists of mucous membranes that are delicate and can only tolerate temperatures of 50-60°C. Exceeding this temperature range, the mucous membranes of the esophagus will be burned. Freshly brewed tea, freshly cooked porridge, temperature as high as 80 ~ 90 °C. If you eat or drink such food or tea, you will burn the wall of the esophagus and even form a superficial ulcer. In order to promptly repair these injuries, the epithelial cells of the esophageal mucosa must accelerate proliferation. If the scald-repair is repeated, the esophageal mucous membranes will undergo qualitative changes and develop into cancerous tumors. Chewing is to process food into a paste-like mass for easy digestion