Small amounts of alcohol might, in effect, make brain cells more fit. Alcohol in moderate amounts stresses cells and thus toughens them up to cope with major stresses down the road that could cause dementia," said Edward J. Neafsey, Ph.D., co-author of the study, as reported by Science Daily. "We don't recommend that nondrinkers start drinking," Neafsey said. "But moderate drinking — if it is truly moderate — can be beneficial.