I have the odd drink, but really as long as you are honest with yourself its no big deal i.e. "I only have three drinks a week doc" at your annual check up - when in reality its more like thirty. Its just as bad for you as eating too much red meat, not enough iron, eating anything from a high street food chain (Subway is horrendous), breathing in whilst outside at the Ace Cafe (North Circular the most polluted road in the UK)...we encounter bad health every day, as long as none of it is to excess!
Its why I find all these 'guides' about having strict diets and eating sachets of gloop for a month just quite frustrating, as none of them recommend you get outside, go for a walk, take the stairs, play sport etc.