"Smoking "rots" the brain by damaging memory, learning and reasoning, according to researchers at King's College London.
A study of 8,800 people over 50 showed high blood pressure and being overweight also seemed to affect the brain, but to a lesser extent.
Scientists involved said people needed to be aware that lifestyles could damage the mind as well as the body.
Their study was published in the journal Age and Ageing."
http://www.bbc.co.uk/news/health-20463363
