Moderate drinking which is - one to less than three drinks per day- cuts mortality among middle-aged and older adults, a recent insight has found.
The study that examined drinking and mortality during a 20-year period, controlled for confounding factors such as previous problem drinking.
"Although alcohol misuse is linked to many medical conditions, considerable epidemiological evidence indicates that moderate alcohol use is related to reduced total mortality," explained Charles J. Holahan, a professor in the department of psychology at The University of Texas at Austin and corresponding author for the study.
"We expected that a substantial part of the health benefits associated with moderating drinking were due to confounding factors associated with alcohol abstention. For example, abstainers may include former problem drinkers with health problems and individuals who are atypical in terms of sociodemographic and social-behavioral factors that may increase health risk," he added.
"None of the studies that have examined the association of drinking and mortality and cardiovascular disease have been experimental studies in which a group of people was randomly chosen to drink a particular amount of alcohol or to not drink alcohol," observed Alison A. Moore, professor of medicine and psychiatry in the David Geffen School of Medicine at the University of California, Los Angeles.
"All have been observational studies, meaning those in which persons who consume varying amounts of alcohol are compared with those who don't. Because conditions in these observational studies are not controlled and the characteristics of persons who choose to drink varying amounts of alcohol or not differ quite a bit, it is impossible to prove that alcohol consumption causes reduced risks for coronary heart disease, diabetes or mortality,' added Moore.