Ever wondered why only some heavy drinkers and smokers die young while others live to a ripe old age? Well, the answer lies in the genes, say scientists. INHERENT RISK: Experts have identified two genes that they say put carriers at heightened risk of developing cancer An international team has identified two genes that it claims increases the chances of an unhealthy lifestyle, giving a drinker or a smoker cancer — in fact the genes put carriers more at a heightened risk of developing cancers of skin, lung, bladder, prostate and cervical. Lead scientist Tim Bishop of University of Leeds said cancer was often caused by a “complex” interplay between genetic and environmental factors, and these newly identified genes could go some way to explaining their relationship. The findings, according to them, could allow doctors to identify those most at risk from suffering the potentially deadly conditions due to a combination of genetics and their lifestyle, the Daily Telegraph repo...