Light to moderate social drinking, a glass or two of wine or beer a day, can reduce the risk of developing Alzheimer’s disease, according to American researchers. After analyzing more than 140 studies dating back to 1977 and involving more than 365,000 people, scientists at Loyola University Chicago Stritch School of Medicine found that moderate drinkers were 23 percent less likely to develop forms of dementia and cognitive impairment. Moderate drinking is defined as a maximum of two drinks per day for men and one drink for women. “It is well accepted that a glass of wine is good for your heart and reduces coronary artery and cardiovascular diseases,” said Edward J. Neafsey, a co-author of the study.