人类已有二三百万年的历史,但是在绝大部分时间内,人类是吃生冷食物的,火食或熟食是很晚才出现的。人类所经历的生食时代,又称茹毛饮血时代,只有人工取火发明之后,才进入火食时代。一、茹毛饮血在我国古代典籍中不少茹毛饮血生活的记载。《韩非子·五蠹》;“上古之世,人民少而禽兽众,人民不胜禽兽虫蛇,……民食果蔬蚌蛤,腥臊恶臭而伤害肠胃,民多疾病,钻燧取火,以化腥臊,而民说之,使王天下,号曰燧人氏。”(图一)《淮南子·修务训》:“古者,民茹草饮水,采树木之实,……于是神农乃始教民播种五 Mankind has a history of two to three million years, but for most of the time humans are eating cold food, and the fire or cooked food is very late. The era of raw food that mankind has experienced, also known as the era of rough hair, only after artificial fire was invented, did not enter the fire era. First, the rough hair in ancient Chinese ancient books in many rough life records. ”Han Feizi five beetles;“ ”The ancient world, the people of small animals and beasts, the people are numerous birds of pest insects, ... ... people food fruits and vegetables mussel clam, stench stench and hurt the stomach, many diseases, drilling Sui fire, to (Figure 1) “Huainanzi repair training”: "The ancient, folk Ru grass drinking water, mining trees in fact ... ... So Shennongnaisi Beginning of people planting five