Researchers at the University of Western Australia find that damage to the brain's gray matter and loss of cognitive function occurs at a higher rate for the elderly who smoke than for non smokers.
http://news.smh.com.au/breaking-news-national/older-smokers-burn-through-grey-matter-20110209-1amv6.html, http://www.sciencealert.com.au/news/20111002-21833.html?utm_source=feedburner&utm_medium=feed&
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