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Danish researchers claim that women who drink two or more bottles of wine over a weekend are subjecting themselves to a double risk of breast cancer.
A study of 17,647 nurses found twice the risk of breast cancer in women who drank 22–27 drinks a week compared with those who drank one to three drinks.
European Journal of Public Health reported the risk to be greatest when drinks were consumed in a short period.
Group study of women over the age of 44 drank moderate amount of alcohol.
Study considered one beer or a glass of wine to be one drink which is roughly 12g of alcohol in Denmark.
Twenty five percent of the women consumed more than the recommended fourteen drinks a week.
One out of ten women consumed more than four drinks a day, while thirteen percent were weekend binge drinkers, consuming more than 10 drinks between Friday and Sunday.
Two percent increased risk of breast cancer associated with each additional drink consumed verses four percent increased risk with each additional drink over the weekends.
Study concluded this was due to more alcohol consumed over the weekend session.
130% increased risk if a woman consumes 22–27 drinks over the course of the week.
Excessive drinking just one day during the week showed an increased risk my 55%.
Higher alcohol intake may increase estrogen levels associated with the development of breast cancer, according to researchers.
A lead researcher Dr Lina Morch in the a Centre for Alcohol Research in Denmark, who led the study, said: “What our study suggests is that the total amount of alcohol consumed has a detrimental effect on the risk of breast cancer, but also the drinking pattern seems to have an impact on the risk.
“When more drinks are consumed within a limited time frame the concentration of alcohol in the blood peaks, which we suppose is more harmful than when the same amount of alcohol is consumed over longer time periods.”
Her advise to women was to drink in moderate amounts and to avoid consuming lots of alcohol in one day.
Dr Alison Ross, Cancer Research UK's science information officer, said: “Researchers estimate that alcohol causes at least 2,000 breast cancer cases every year in the UK.
To avoid being one of the statistics, reduce your alcohol intake, exercise regularly, eat healthy and live your best life.
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