Older men are more prone to cognitive impairment from dirty air

Hold your breath LIVING under thick layers of smog is known to cause illness and reduce life expectancy. The degree to which pollution harms the mind is less clear. In theory some of the toxins that get inhaled could damage the nervous system and hamper intellect, but few studies have looked into this. One just has, however, and the results are worrying, particularly for older men. The new study is by Xiaobo Zhang, Xin Zhang and Xi Chen of Peking University, in China. When Dr Zhang returned to C...