Facts of Life
Facts of Life:
Issue Briefings for Health Reporters
Vol. 8, No. 12
December 2003
Potential Health Benefits of Moderate Drinking
The Issue
The Facts
No Prescription for Alcohol?
Expert Sources
References
The Issue:
Some medical
remedies walk a fine line between lethal poison and healing potion. (1) Doctors
know, for instance, that drugs like blood thinners have a narrow “therapeutic
window” where slightly altered doses can harm patients. Could alcohol
fall into this category of friend and foe? Some studies suggest that moderate
drinking may benefit cardiovascular health.
What’s in
a Dose?
Most agree
on a definition of moderate drinking: an average of one or two drinks a
day for men and one drink a day for women who are not pregnant. (One drink
is 12 ounces of beer, 4 ounces of wine or 1 ounce of 100-proof liquor.)
(2) But some studies suggest that it’s not the amount but the pattern
of drinking that confers benefits. Moderate drinkers tend to consume a
little every day, rather than having weekend binges. Researchers are still
teasing out the ingredients that underlie alcohol’s benefits. And
doctors vary on whether moderate alcohol use should be recommended only
for those at risk for heart disease or to a wider spectrum.
Lifestyles of the Cocktail Set
Not all researchers
are convinced that alcohol should be part of healthy living. They point out that
exercise, proper diet and cholesterol-controlling drugs have the same effect
as alcohol without potential for abuse. Others say moderate drinkers may have
lifestyle factors — like a varied diet or money for regular checkups — that
make it hard to determine alcohol’s role in good health.
The Facts:
- A 12-year study of
38,077 men found that those who drank three or more times a week had a
reduced risk of heart attack compared with men who drank less frequently.
(6)
- Women who drink an
average of half a drink a day have a 14 percent lower risk of developing
high blood pressure than nondrinkers, but those who drink more than one
and half drinks a day can raise their risk of hypertension by 20 percent.
(11)
- A 2001 study found
that moderate drinkers (those who had at least seven drinks a week) had
a 32 percent lower risk of dying after a heart attack
than those who did not drink. (3)
- Moderate drinking
has been linked to a decreased risk of heart failures other than heart
attacks in older people. (4)
- Light-to-moderate
drinking may slow stiffening of the arteries with age, a phenomenon that
can raise systolic blood pressure over time. (5)
- One
to two alcoholic drinks per day can increase levels of “good” cholesterol
by 12 percent on average, an increase similar to that seen with exercise
and certain medications. (7)
- The heart-healthy
effects of moderate drinking may stem from regular consumption
rather than infrequent binges, according to a 2003 study of
moderate drinking among black men. (8)
- Seniors
age 65 and older who drank more than 15 drinks a week were
41 percent less likely to have silent strokes than abstainers,
but were at
greater risk for brain shrinkage, a 2001 study concludes. (2)
- A
British survey suggests that alcohol’s health benefits
are wasted on the young: Among men younger than 35 and women
younger than 55, light
drinkers had a higher risk of death than abstainers. Alcohol-related
injuries may explain the trend. (9)
- White
or red? A study of 1,565 adults gives the edge to white wine
when it comes to boosting lung capacity and function. (10)
- Moderate
drinkers may be more likely than lifelong abstainers to seek
preventive health care and engage in other healthy behaviors,
according to a 2001 survey. (12)
- Harvard
researchers found a slight reduction in Parkinson’s
disease rates among moderate beer drinkers, but the effect
was so slight that the
researchers could not verify beer drinking as the protective
factor. (13)
No
Prescription for Alcohol?
Despite studies connecting moderate drinking to improved
cardiovascular health, few physicians recommend a half-glass of wine
with dinner as a prescription for better health. This silence could
be a big mistake, says Curtis Ellison, M.D., of the Boston University
School of Medicine.
“The current data are so strong that it is incumbent on each
physician to inquire into the drinking habits of their patients, and
if there are no contraindications, to make them aware of the research
on the benefits of moderate drinking,” he says.
Ellison
argues that there is enough evidence to include moderate drinking
in the familiar litany of lifestyle
recommendations: Don’t smoke,
be active, maintain a healthy weight and eat a balanced diet.
But other researchers think it may be premature to elevate alcohol
to that status.
“
There is insufficient information to encourage patients who do not
drink alcohol to start,” says Ira J. Goldberg, M.D., of Columbia
University College of Physicians and Surgeons.
Goldberg
says “nothing has changed” since
he wrote a New England Journal of Medicine editorial (14) this year
cautioning against
alcohol as preventive medicine.
Few
physicians would recommend a drug like alcohol that reduces the risk
of heart attack by 25 percent
to 50 percent, “but that would
result in thousands of additional deaths per year due to cancer, motor
vehicle accidents and liver disease,” he wrote.
Ellison disagrees, saying it is unlikely that a recommendation for
moderate drinking would lead to an increase in alcohol abuse and health
problems.
In
fact, he says, a frank discussion of alcohol’s risks and
benefits might help some heavy drinkers “learn a healthier pattern
of drinking.”
“We’re what’s known as a temperance community,” Ellison
says. “We consider alcohol as ‘let’s get drunk’ or ‘abstain’ and
nothing in between.”
“The danger is in not including alcohol in a healthy lifestyle,” he
asserts.
The
two agree that alcohol’s potential
benefits need to be confirmed by a randomized clinical trial.
Goldberg
says that “such data are especially important if the
therapy has potentially adverse effects.” He notes that a randomized
trial could help pinpoint whether drinkers get health benefits from
alcohol or whether they just lead healthier lives.
But Ellison says researchers, including himself, have had problems
getting funding for such a trial.
“The NIH up to now has been worried about doing anything that
might make alcohol come up looking good,” he says.
The
health community’s attitude
may be changing. Ellison says a draft statement recently circulated
among researchers by the National
Institute on Alcoholism and Alcohol Abuse makes some favorable recommendations
about moderate drinking.
.
Expert
Sources:
Ira J. Goldberg, M.D.
Columbia University
College of Physicians & Surgeons
(212) 305-5961
ijg3@columbia.edu
R. Curtis Ellison, M.D.
Boston University
School of Medicine
(617) 638-8080
ellison@bu.edu
Kenneth Mukamal, M.D.
Beth Israel Deaconess Medical Ctr.
(617) 667-4476
Carla Green,
Ph.D., M.P.H.
Oregon Health
and Science University
(503) 494-4630
greenc@ohsu.edu
References
1. Kaiser, J. (2003) Hormesis: Sipping From a Poisoned Chalice. Science,
302, 376-379.
2. Mukamal, K.J. et al. (2001) Alcohol consumption and subclinical
findings on magnetic resonance imaging of the brain in older adults:
The Cardiovascular Health Study. Stroke, 32, 1939-1946.
3. Mukamal, K.J. et al. (2001) Prior alcohol consumption and mortality
following acute myocardial infarction. Journal of the American
Medical Association, 285, 1965-1970.
4. Abramson, J.L. et al. (2001) Moderate alcohol consumption and risk
of heart failure among older persons. Journal of the American Medical
Association, 285, 1971-1977.
5. A drink a day takes some arterial stiffness away, American Heart
Association Scientific Sessions news release, Nov. 12, 2001. http://www.eurekalert.org/pub_releases/2001-11/aha-ada110201.php
6. Mukumal, K.J. et al. (2003) Roles of drinking pattern and type
of alcohol consumed in coronary heart disease in men. New England
Journal of Medicine, 348, 109-118.
7. Goldberg, I.J. et al. (2001) Wine and your heart: A science advisory
for healthcare professionals from the Nutrition Committee, Council
on Epidemiology and Prevention, and Council on Cardiovascular Nursing
of the American Heart Association. Circulation, 103, 472-475.
8. Sempos, C.T. et al. (2003) Average volume of alcohol consumption
and all-cause mortality in African Americans: The NHEFS Cohort. Alcoholism:
Clinical and Experimental Research, 27, 88-92.
9. White, I.R. et al. (2002) Alcohol consumption and mortality: Modeling
risks for men and women at different ages. British Medical Journal,
325, 191-194.
10. Schunemann, H.J. et al. (2003) Beverage specific alcohol intake
in a population-based study: Evidence for a positive association between
pulmonary function and wine intake. BMC Pulmonary Medicine, 2, 3-7.
11. Thadhani, R. et al. (2002) Prospective study of moderate alcohol
consumption and risk of hypertension in young women. Archives of
Internal Medicine, 162, 569-574.
12. Green, C.A. and M.R. Polan (2001) The health and health behaviors
of people who do not drink alcohol. American Journal of Preventive
Medicine, 21, 298-305.
13. Hernan, M.A. et al. (2003) Alcohol consumption and the incidence
of Parkinson's disease. Annals of Neurology, 54, 170-175.
14. Goldberg, I.J. (2003) To drink or not to drink? New
England Journal of Medicine, 348, 163-164.
The Center for the Advancement
of Health is an independent nonprofit organization that promotes
greater recognition of how psychological, social, behavioral,
economic and
environmental factors influence health and illness. The Center advocates the highest
quality research and communicates it to the medical community and the public. The
fundamental aim of the Center is to translate into policy and practice the growing body of
evidence that can lead to the improvement and maintenance of the health of individuals and
the public. The Center was founded by the John D. and Catherine T. MacArthur Foundation
and the Nathan Cummings Foundation, which continue to provide core funding. Funding for
this series was provided by the Robert Wood Johnson Foundation.
For Information Contact:
Kristina Campbell
Editor, Health Behavior News Service
Center for the Advancement of Health
2000 Florida Ave., NW, Suite 210
Washington, DC 20009
p. 202.387.2829 / f. 202.387-2857
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© Copyright 2003, Center for the Advancement of Health
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