Researchers may be underestimating alcohol consumption in the U.K. by failing to account for larger wine glasses in bars and increasingly stronger beers and ciders on the market, Medical News Today reported Dec. 13.

The U.K.'s Office of National Statistics has announced that it will updates its methods for calculating alcohol consumption, saying that past research may be underestimating alcohol use by 30 percent. In some cases, people may not be drinking a greater volume of alcoholic beverages, the drinks they are consuming are stronger. And in the case of wine, some pubs and bars have replaced the standard 125ml wine glass with larger goblets.

Estimates using the new assumptions about alcohol content are expected to rise from an average weekly intake of 10.8 units of alcohol to 14.3 units.