A man smokes in an alley behind his place of work in London January 17, 2014. Fifty years after the first U.S. surgeon general's report declared smoking a hazard to human health, the tally of smoking-related effects keeps rising, with liver and colorectal cancers, diabetes, rheumatoid arthritis and even erectile dysfunction joining the list, according to a report released on Friday. REUTERS/Luke MacGregor (BRITAIN - Tags: HEALTH SOCIETY TPX IMAGES OF THE DAY)