Health
benefits of moderate drinking may be overstated, study finds
Penn State
The benefits of light
alcohol consumption, as well as the risks associated with not drinking at all,
might not be as great as previously thought, according to Penn State
researchers who examined the drinking habits of middle-aged adults.
The researchers
analyzed information about more than 9,000 people across England, Scotland and
Wales born in 1958 who are participating in the longitudinal National Child
Development Study.
The study, based at the University College London Centre for Longitudinal Studies, tracked changes in people's drinking and cigarette smoking habits from age 23 to 55, and linked these changes to mental and physical health.
The study, based at the University College London Centre for Longitudinal Studies, tracked changes in people's drinking and cigarette smoking habits from age 23 to 55, and linked these changes to mental and physical health.
About one third of men and women who reported drinking at the light-to-moderate level were very unlikely to smoke.
While this group of light drinkers and non-smokers enjoyed the best health and quality of life in middle age, three other groups experienced more health problems.
These groups were those who drank lightly to moderately but also smoked; those who both drank more heavily and smoked; and those who refrained from drinking alcohol or reduced their drinking over time.
Light-to-moderate
drinkers were defined as adults who consumed no more than 14 units of alcohol,
which is equivalent to roughly six pints of beer or six medium-sized glasses of
wine, per week.
This is the current maximum recommended for men and women by the United Kingdom's Department of Health, according to Jeremy Staff, professor of criminology and sociology at Penn State and the study's lead author.
This is the current maximum recommended for men and women by the United Kingdom's Department of Health, according to Jeremy Staff, professor of criminology and sociology at Penn State and the study's lead author.
While the supposed
benefits of moderate drinking have been widely reported in the media, many
reports have failed to take into account other risk factors. For example,
light-to-moderate drinkers suffered poor health in midlife if they were former
smokers or still had the occasional cigarette.
This may be due to a direct effect of smoking or because of other lifestyle-related risks, such as lack of exercise or obesity. Many midlife abstainers also began their adult life in poorer physical or mental health than peers who had completely abstained from alcohol.
This may be due to a direct effect of smoking or because of other lifestyle-related risks, such as lack of exercise or obesity. Many midlife abstainers also began their adult life in poorer physical or mental health than peers who had completely abstained from alcohol.
"Alcohol
abstainers are a diverse group. They include former heavy drinkers who quit due
to problems with alcohol, as well as those who quit drinking due to poor
health, and not just lifetime abstainers," said Staff. "Medical
professionals and public health officials should be wary of drawing conclusions
about the so-called 'dangers' of never drinking without more robust
evidence."
About 1-in-5 members
of 55-year-olds who said they had never drunk alcohol in their lives had
previously reported drinking when they were younger.
This suggests that those who drink very little may tend to misremember or under-report previous drinking habits. When studies include this group as lifetime abstainers, apparent 'harms' of abstaining may be overestimated, said the researchers.
This suggests that those who drink very little may tend to misremember or under-report previous drinking habits. When studies include this group as lifetime abstainers, apparent 'harms' of abstaining may be overestimated, said the researchers.
While modest drinking
habits also have been linked with higher levels of education, those with few or
no educational qualifications were also among those who did not drink or drank
modestly.
On the other hand, men and women with the highest educational qualifications at age 23 were more likely than their peers to drink at light-to-moderate rates throughout their adult lives, and were unlikely to smoke.
On the other hand, men and women with the highest educational qualifications at age 23 were more likely than their peers to drink at light-to-moderate rates throughout their adult lives, and were unlikely to smoke.
Jennifer Maggs,
professor of human development and family studies at Penn State and another of
the study's authors, added, "Evidence continues to grow that alcohol has
many health risks, including for cancer. Therefore, it is dangerous to report
only benefits of moderate alcohol consumption. Drinking habits are also shaped
by our education, health earlier in life, and related lifestyle factors
including smoking. These other influences may be the real factors underlying
the connection between drinking and midlife health."
According to Sir Ian
Gilmore, Chair of the Alcohol Health Alliance in the UK, "This study
provides yet more evidence that any benefits associated with drinking alcohol are
smaller than previously thought. The most effective ways to reduce harms
associated with alcohol consumption are to introduce pricing measures linked to
alcohol sales, and enable more informed choices through public education
efforts and mandatory labeling of alcohol products."
