Alcohol contains little other than calories so if your fave jeans are feeling a bit tight, it's wise to cut down. To stay healthy, experts recommend that women have no more than two to three units a day, where one unit is equivalent to one single measure of spirits, one small glass of wine or half a pint of regular strength lager or cider. It's also worth remembering that alcohol irritates the digestive system – even small amounts of booze make the stomach produce more acid than usual, which can cause inflammation of the stomach lining.