"Nonalcoholic beer" refers to a type of beverage that looks, feels, and tastes like regular beer but contains very little to no alcohol. Full definition
(There are no such issues with nonalcoholic beer, but where's the fun in that?) (bonappetit.com)
Runners who drank two to three pints of nonalcoholic beer after running in the weeks leading up to and after a marathon were less likely than those who drank a placebo beverage to suffer respiratory ailments and had less inflammation, an effect the researchers postulated may be a result of the rich mix of polyphenols found in beer (with or without alcohol). (well.blogs.nytimes.com)