The common misconception that moderate alcohol consumption is beneficial for your health

Rigorous research suggests that drinking even small amounts of alcohol can shorten your lifespan, and that only people with serious health problems would benefit from moderate drinking. That's the conclusion of a review of 107 studies that looked at how drinking alcohol at specific ages affects the risk of dying from all causes.

“People need to be skeptical of the claims that the industry has been peddling for years.” Tim Stockwell “They clearly have a strong interest in promoting their products as not cancer-causing but as life-prolonging,” said researchers from the University of Victoria in Canada.

Stockwell says people should be told that while the risks of moderate drinking are small, it's not beneficial. “It may not be as dangerous as a lot of other things, but it's important that consumers are aware,” he says. “I also think it's important that manufacturers inform consumers of the risks through warning labels.”

The best way to assess the effects of alcohol would be to randomly select people who drink and who don&#39t drink as children, and then monitor their health and drinking for the rest of their lives. Because such studies are not possible, researchers instead have to ask people about their drinking habits and follow them over a much shorter period of time.

By the 2000s, a number of studies of this kind had been done, suggesting that the relationship between alcohol consumption and risk of death at a given age follows a J-shaped curve: drinking a little alcohol slightly reduces your risk of dying from any cause compared with a non-drinker, but as you drink more alcohol, your risk increases sharply.

Stockwell says he was convinced the science was well-established at the time, but he and other researchers have since Such studies have serious flaws.

The main problem is that they often don&#39t compare people who have never drunk alcohol to people who have. Many studies instead compare people who no longer drink to people who still drink. People who stop drinking, especially later in life, often have health problems, so moderate drinkers seem healthy in comparison, Stockwell says.

Although some studies claim to compare current drinkers with “never drinkers,” the definition of the latter group often actually includes occasional drinkers, Stockwell says. For example, one study defined people who had up to 11 drinks a year as lifetime abstainers.

“In our opinion, the majority of research has not addressed this potential source of bias,” Stockwell says, “To be clear, people have tried to address this, but we don&#39t think they&#39ve done so adequately.”

In fact, his team found that of 107 studies they reviewed, only six adequately addressed these sources of bias, and none of those six found any risk reduction with moderate drinking.

” [high-quality] “The research suggests a linear relationship,” Stockwell says, “the more you drink, the higher your risk of heart disease. Our study looks at total mortality, and it&#39s clear that heart disease is the main issue.”

The review says that it is very clear that lower quality studies are more likely to suggest a beneficial effect. Duane Mellor At the British Dietetic Association.

But he points out that this doesn&#39t take into account the social aspects of moderate drinking. “While it&#39s healthier to socialize without drinking alcohol, the benefits of spending time with other people are likely to outweigh the risks of consuming one or two units of alcohol,” he says. “Perhaps the challenge is to limit alcohol intake in this way.”