进食足够的蔬菜和水果,经常锻炼身体,避免抽烟或酗酒——无非希望寿命能更长一些。这样做确有好处,但或许还不够。一些让人感兴趣的证据表明,接受微量毒物——或许甚至一点儿辐射,人体功能就会处于最佳状态。一些科学家推断:平和的物理刺激可起到一种接种疫苗的作用,能使人体对导致衰老的累积损伤产生抵抗力。 Eat enough vegetables and fruits, exercise regularly and avoid smoking or alcoholism - nothing more than a longer life expectancy. This is good, but perhaps not enough. Some interesting evidence suggests that human body functions are at their best when it comes to accepting trace poisons - and perhaps even a little radiation. Some scientists conclude that a gentle physical stimulus can act as a vaccination and can make the body resistant to the cumulative damage that causes aging.