Alcohol
Alcohol causes thousands of cancer cases per year in the UK. World Health Organisation conducted global surveys on alcohol consumption and alcohol related harm was reported that globally, men consume more alcohol than women and the percentage of abstainers is higher in women than in men.
Smoking
Each year in the UK, thousands of deaths and diseases are attributed to smoking. Other smoking alternatives might not be as harmful, but then some of them might potentially be even worse. Tobacco is the largest preventable cause of death in the world.