Does Wine Drinking Protect Against Depression?

Three friends drink wine together at dinner

Drinking alcohol may affect people’s risk of depression.
Credit: Drinking wine photo via Shutterstock

Enjoying several glasses of wine each week may not only protect your heart, it may also help protect your mental health, a new study suggests.

Researchers in Spain have found that drinking moderate amounts of alcohol — especially wine — was linked with a lower risk of depression.

Older men and women who consumed two to seven small glasses of wine weekly were 32 percent less likely to suffer from depressioncompared with people who never drank alcohol, the study revealed.

These results appear to contradict previous studies, which have often linked drinking alcohol with an increased risk of depression. Two reasons researchers have suggested for this increased risk are that people might drink more to mask depressive symptoms and people might also turn to alcohol to cope with a personal problem, such as job loss, family issues or financial troubles — all factors that may also trigger a depressive episode. [7 Ways Alcohol Affects Your Health]

As for why these findings seem to conflict with other studies on alcohol, lead author Dr. Miguel Martinez-Gonzalez, a cardiologist and professor of preventive medicine and public health at the University of Navarra in Pamplona, said it could be because the new study did not include people who previously had depression, or people known to havedrinking problems.

“In our study population, the average intake of alcohol was low, and the pattern of consumption was typically Mediterranean, with alcohol coming preferentially from wine, consumed during meals and without episodes of binge drinking,” he said.

The study is published online today (Aug. 29) in the journal BMC Medicine. Some study researchers receive funding from the alcohol industry.

Moderate amounts protective

The study looked at more than 5,500 men and women ages 55 to 80 in Spain, who were involved in a research trial evaluating the effects of the Mediterranean diet on heart disease risk. None of them had depression at the study’s start.

During a follow-up period of up to seven years, 443 people reported that they were diagnosed with depression.

Researchers found that light to moderate drinkers, who drank 5 to 15 grams of alcohol  daily on average, had a lower risk of depressioncompared with people who abstained from imbibing. (A small glass of wine contains about 9 grams of pure alcohol).

The lowest rates of depression were observed in people who consumed moderate amounts of wine. The study found that men and women who drank two to seven small glasses of wine each week were 30 percent less likely to develop depression, compared with those who drank none.

These results held true even after researchers took into account otherlifestyle factors that could influence rates of the mood disorder, such as gender, age, smoking habits, marital status, education and physical activity levels.

Although the exact reasons why drinking moderate amounts of alcohol may have beneficial effects on the brain are unclear, Martinez-Gonzalez said a compound found in grapes may help protect parts of the brain from inflammatory processes involved in depression.

Contrary findings MORE

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