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大脑:20岁开始老化随着我们年龄越来越大,大脑中神经细胞(神经元)的数量逐步减少。我们降临人世时神经细胞的数量达到1000亿个左右,但从20岁起开始逐年下降。到了40岁,神经细胞的数量开始以每天1万个的速度递减,从而对记忆力、协调性及大脑功能造成影响。
Brain: Aged 20 at the Beginning As we grow older, the number of nerve cells (neurons) in the brain is gradually reduced. When we were born, the number of nerve cells reached 100 billion or so, but we have been declining year by year since the age of 20. By the age of 40, the number of nerve cells begins to decrease at a rate of 10,000 per day, affecting memory, coordination and brain function.