Scientists looked at five wine brands, one cider and 15 top beer brands including Coors Light, Miller Lite, Budweiser, Corona, Heineken, Guinness and Stella Artois and found glyphosate in all but one, Peak Organic IPA.

Tsingtao was found to be the worst beer for glyphosate, with 49.7parts per billion (ppb), and of the five wines, the 2018 Sutter Home merlot had the highest levels of glyphosate, with 51.4 ppb.

Glyphosate is found in Monsanto's Roundup and is a probable carcinogen, according to the World Health Organization.

While the amount detected was below the Environmental Protection Agency limits, it is still "concerning given the potential health risks," said United States Public Interest Research Group (PIRG), which carried out the testing.

Study author Kara Cook-Schultz said that despite the best efforts of drinks manufacturers, the worrying reality is that "consumers will likely drink glyphosate at every happy hour and backyard barbecue around the country."