Binge drinking is harmful to older drinkers, may be hidden by weekly average

March 3, 2014

Numerous studies have highlighted the purported association between moderate drinking and reduced mortality. However, these analyses have focused overwhelmingly on average consumption, a measure that masks diverse, underlying drinking patterns such as weekend heavy episodic or binge drinking. A study of the association between binge drinking and mortality among moderate-drinking older adults has found that those who engage in binge drinking have more than two times higher odds of 20-year mortality in comparison to regular moderate drinkers.

Results will be published in the May 2014 online-only issue of Alcoholism: Clinical & Experimental Research and are currently available at Early View.

"Binge drinking is increasingly being recognized as a significant public health concern," said Charles J. Holahan, a professor of psychology at The University of Texas at Austin as well as corresponding author for the study. "In fact, the U.S. Centers for Disease Control recently concluded that binge drinking is 'a bigger problem than previously thought.' Ours is one of the first studies to focus explicitly on an older population in examining binge drinking among, on average, ."

"Some of the greater attention to binge drinking is due to increases in binge drinking since the mid-1990s, but perhaps more because of growing recognition of the importance of patterns: it's not just how much you drink but how you drink," added Timothy Naimi, a physician and alcohol researcher at Boston Medical Center at Boston University. "All told, excessive alcohol use causes about 80,000 deaths annually in the US, and many of these deaths are among youth and young and working-age adults."

For this study, researchers used data from a larger project examining late-life patterns of alcohol consumption and drinking problems. The baseline sample was comprised of 446 adults (334 men, 112 women) aged 55 to 65: 74 moderate drinkers who engaged in episodic heavy drinking, and 372 regular moderate drinkers. Study authors controlled for a broad set of socio-demographic, behavioral, and health-status covariates. Death across a 20-year follow-up period was confirmed primarily by death certificate.

The findings highlight the importance of focusing on drinking patterns, as well as absolute amounts of ethanol consumed, as predictors of health and mortality outcomes among older adults.

"We found that among older adults, those who engage in heavy episodic drinking – even when average consumption is moderate – show significantly increased total mortality risk compared to regular moderate drinkers," said Holahan. "These findings demonstrate that, among older adults, drinking patterns need to be addressed along with overall consumption in order to understand alcohol's health effects."

"This is a crucial point," added Naimi, "since approximately a quarter of 'moderate' drinkers report binge drinking, and most folks in the US don't typically drink in an 'average' way or on a daily basis. Clinicians should understand that even among those with apparently modest average consumption, a number of these folks may be drinking in risky ways."

Both Holahan and Naimi said these findings may pose special health concerns for these older adults, even though binge drinking is damaging at any age.

"Binge drinking concentrates 's toxicity and is linked to mortality by damaging body organs and increasing accident risk," said Holahan. "Binge drinking may be additionally risky for older adults due to aging-related elevations in comorbidities as well as medication use."

Naimi agreed. "Binge drinking is dangerous and many bad things have happened to drinkers or to others – car accidents, fights, injuries, domestic violence, sexual assaults – on the basis of binge drinking even if it is 'atypical' of how they drink and/or among those who are not alcoholic," he said. "While it is less common among those who are older than among youth and younger adults, it may carry as much or more risk on a per-person basis as older individuals have less physiologic reserves, for example."

"The take-home message here for readers is that is a significant public health problem that is frequent among middle-aged and ," said Holahan.

Explore further: Frequent binge drinking is associated with insomnia symptoms in older adults

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