The authors say their findings challenge the widely held belief that moderate drinking is beneficial to cardiovascular health, and support the UK’s recently lowered guidelines.
The study compared the health and drinking habits of over 600,000 people in 19 countries worldwide and controlled for age, smoking, history of diabetes, level of education and occupation.
The upper safe limit of drinking was about five drinks per week (100g of pure alcohol, 12.5 units or just over five pints of 4% ABV beer or five 175ml glasses of 13% ABV wine). However, drinking above this limit was linked with lower life expectancy. For example, having 10 or more drinks per week was linked with one to two years shorter life expectancy. Having 18 drinks or more per week was linked with four to five years shorter life expectancy.
The research, published today in the Lancet, supports the UK’s recently lowered guidelines, which since 2016 recommend both men and women should drink no more than 14 units of alcohol each week. This equates to around six pints of beer or six glasses of wine a week.