A glass of wine a day may not be as good for you as some research suggests, an expert has said. Studies indicating that it may be beneficial to drink small amounts of alcohol are low quality and often compare moderate drinkers with those who have had to give up for health reasons, a new study suggests. Moderate drinking still carries some potential health hazards, including increased risk of certain cancers, experts said. In the studies analysed by lead researcher Tim Stockwell, of the Canadian Institute for Substance Use Research at the University of Victoria, moderate drinkers were compared …