专家认为,一些生理变化可作为男性衰老的标志——1.视力:眼球晶状体随年龄增长不断变厚,男子50岁以后会逐渐出现明显视力衰退和聚焦不准。2.头发:随着年龄的增加,男性头皮上毛囊的数量日益减少,头发越来越稀,头发的生长速度也越来越慢,谢顶的男性越来越多。3.心脏功能:男子20岁以后心脏在剧烈运动时的调节能力越来 Experts believe that some physiological changes can be used as a sign of aging men - 1. Sight: The lens of the eye with increasing age, thickening, men after 50 years of age will gradually apparent vision loss and focus are not allowed. 2. Hair: With age, the number of hair follicles in the male scalp is decreasing, the hair is getting thinner and the growth rate of the hair is getting slower and slower, and there are more and more men in the top. 3. Cardiac function: men’s ability to regulate the heart during strenuous exercise after 20 years of age