A study published in May 2025 in Nutrients by researchers from the Ruhr University in Bochum found that drinking alcohol-free beer daily for four weeks can affect how the body processes glucose and lipids in young, healthy men. Although alcohol-free beer does not contain ethanol, the main component of alcoholic drinks, it still contains residual sugars, which contribute to overall calorie intake. The researchers tested several varieties of alcohol-free beer and found that they contained different levels of sugar, ranging from 2.8 grams per 100 milliliters in a blonde beer to 4.9 grams in a mixed beer. Consuming two bottles per day of the mixed beer, totaling 660 milliliters, could provide more than 32 grams of sugar—similar to the amount found in a can of soda. The study showed that different types of alcohol-free beer had varying effects on blood sugar, insulin levels, and triglycerides. The mixed beer led to an increase in fasting blood sugar, while a white beer caused higher insulin and C-peptide levels, suggesting increased activity in the pancreas. Both the mixed and white beers increased triglyceride levels by 15 to 17 milligrams per deciliter. In contrast, the classic blonde beer did not significantly alter these markers and even helped lower levels of "bad" cholesterol, similar to the effect of drinking water. Henriette Kreimeyer, who led the analysis, explained that the differences observed were mainly due to the calories and sugars in the beers, rather than the polyphenols—compounds often noted for their antioxidant benefits. The study was conducted on a specific group: young, thin men in good health. As such, the results may not apply to other groups, such as older adults, people with different body types, or those with health conditions. The research highlights that the actual composition of alcohol-free beer, rather than its name, should be considered when evaluating its impact on health. The findings suggest that consumers should be mindful of the nutritional content of alcohol-free beer, especially if they are watching their sugar intake or managing their metabolism. While alcohol-free beer may be a lower-risk alternative to alcoholic drinks, it is not necessarily a healthier option, depending on the specific ingredients and quantities consumed.