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Shares of drinks makers fell after the US surgeon-general said alcoholic beverages should carry a warning to boost awareness about their link to cancer.
The US’s top government doctor on Friday released a public-health advisory stating that alcohol consumption ranks behind tobacco and obesity as the third leading preventable cause of cancer in the US.
Surgeon-general Vivek Murthy said Congress should authorise updated warning labels on beverages containing alcohol about the cancer risk, among other actions that could reduce related cancers in the US.
The advisory and the recommendations are reminiscent of public health efforts targeting the tobacco industry over recent decades, which have led to a dramatic decline in smoking.
Alcohol stocks sold off after the advisory on Friday. New York-listed shares of Boston Beer were down 3.1 per cent in mid-morning trading, and brewer Molson Coors was down 2.1 per cent. Constellation Brands, maker of Modelo, the top-selling beer in the US, shed 1.3 per cent, and Jack Daniel’s maker Brown-Forman fell 1 per cent.
On the other side of the Atlantic, Diageo fell 3.7 per cent in late London trading, while on European exchanges AB InBev sank 2.9 per cent, Rémy Cointreau tumbled 5 per cent and Heineken dropped 1.7 per cent.
Alcohol was first classified as a group 1 carcinogen — meaning they are an agent known to cause cancer in humans — by the International Agency for Research on Cancer in the 1980s. Murthy said evidence of the link between alcohol and cancer has strengthened over time and that for some cancers, such as those of the breast, mouth and throat, the risk starts to rise when people have one or fewer drinks per day.
The World Health Organization issued guidance in 2022 saying there is no safe amount of alcohol consumption that does not affect health. In a statement in the medical journal The Lancet Public Health, the agency said that the latest data indicated that half of all cancers that could be attributed to alcohol were caused by light or moderate drinking, defined as the equivalent of less than one and a half litres of wine, three and a half litres of beer, or 450ml of spirits a week.
The surgeon-general said that less than half of all Americans were aware that drinking alcohol increases the risk of developing cancer. Awareness was far greater for the increased risk from radiation, tobacco and asbestos, the advisory said.
While many countries, including the US, require alcoholic drinks to be labelled with some health warnings, such as the risks of drinking for pregnant women, few specifically alert consumers to the increased risk of cancer. Ireland and South Korea have put warnings about cancer on alcoholic drinks in recent years.
Alcohol can cause cancer by damaging DNA, increasing inflammation, or altering the levels of hormones such as oestrogen. It can also make it easier for other carcinogens such as tobacco smoke to be absorbed into the body.
