Regularly drinking more than the recommended UK guidelines for alcohol could take years off your life, according to new research from the University of Cambridge. The study shows that drinking more alcohol is associated with a higher risk of stroke, fatal aneurysm, heart failure and death.
Regularly drinking more than the recommended UK guidelines for alcohol could take years off your life, according to new research from the University of Cambridge. Part-funded by the British Heart Foundation, the study shows that drinking more alcohol is associated with a higher risk of stroke, fatal aneurysm, heart failure and death.
These findings challenge the widely held belief that moderate drinking is beneficial to cardiovascular health.
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 (100 grams 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 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.
Link between alcohol and cardiovascular disease
The researchers also looked at the association between alcohol consumption and different types of cardiovascular disease. Alcohol consumption was associated with a higher risk of stroke, heart failure, fatal aortic aneurysms, fatal hypertensive disease and heart failure and there were no clear thresholds where drinking less did not have a benefit.
By contrast, alcohol consumption was associated with a slightly lower risk of non-fatal heart attacks.
The authors note that the different relationships between alcohol intake and various types of cardiovascular disease may relate to alcohol's elevating effects on blood pressure and on factors related to elevated high-density lipoprotein cholesterol (HDL-C) (also known as 'good' cholesterol). They stress that the lower risk of non-fatal heart attack must be considered in the context of the increased risk of several other serious and often fatal cardiovascular diseases.
Study limitations
The study used self-reported alcohol consumption and relied on observational data, so no firm conclusions can me made about cause and effect. The study did not look at the effect of alcohol consumption over the life-course or account for people who may have reduced their consumption due to health complications.
According to the researchers, "If you already drink alcohol, drinking less may help you live longer and lower your risk of several cardiovascular conditions.”
Source: The Lancet, April 14, 2018.
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