Men who drink alcohol every day have a lower risk of heart disease than those who drink less frequently, suggests research in the British Medical Journal. But the same is not true for women.
This study raises important questions about drinking patterns and heart health among men and women, but an editorial warns that the results should be interpreted with caution and should not be used to justify potentially harmful drinking behaviour.
It is widely known that moderate drinkers have a lower risk of coronary heart disease than those who abstain, but most research in this field has been done on men and little is known about drinking patterns and risk of heart disease among women.
Researchers in Denmark studied over 50,000 men and women aged 50-65 years who were taking part in a national health study. Details on alcohol intake and drinking frequency over the preceding year were collected, and participants were monitored for an average of 5.7 years.
Coronary heart events were recorded and results were adjusted for known risk factors, such as age, smoking, education, physical activity and diet.
A total of 28,448 women and 25,052 men took part in the study. Women consumed an average of 5.5 alcoholic drinks a week and men consumed 11.3. During the study, 749 women and 1,283 men developed coronary heart disease.
Women who drank alcohol on at least one day a week had a lower risk of coronary heart disease than women who drank alcohol on less than one day a week.
However, risks were similar for drinking on one day a week (36% reduced risk), or seven days a week (35% reduced risk), suggesting that the amount of alcohol consumed is more important than drinking frequency among women.
In contrast, for men, risks were lowest for the most frequent drinkers. For example, men who drank on one day a week had a 7% reduced risk, while men who drank daily had a 41% reduced risk. This suggests that it doesn’t matter how much men drink, as long as they drink every day.
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