人的大脑重量有1400克左右,要消耗掉人体所吸收营养的20%,脑力劳动者的大脑营养消耗更大,如不能合理地补充必要的营养,不但会使人精神疲乏,而且可引起神经衰弱。优质蛋白质的摄入对保护脑力至关重要。人的智力活动需要大量活性化学物质参与,如乙酰胆碱、去甲肾上腺 Human brain weight is about 1400 grams, to consume 20% of the human body to absorb nutrients, brain workers mental nutrition more consumption, if not properly replenish the necessary nutrients, not only people will be mentally tired, but also cause nerve weak. High-quality protein intake is crucial to your brain. People’s intellectual activities require a large number of active chemical substances involved, such as acetylcholine, norepinephrine