It may have been the "summer of seltzer," but better-for-you beer has also been popular, led by Anheuser-Busch InBev's (BUD -1.14%) Michelob Ultra and its 2.6 grams of carbs, 95 calories, and 4.2% alcohol by volume.

While sales data indicates people might say they want these healthy session beers, but actually buy more hearty brews, we're now seeing a new push to introduce more non-alcoholic beer, with both Anheuser-Busch and Molson Coors (TAP -2.37%) MillerCoors division preparing their own near-beer labels.

Friends drinking beer at pub

A search for lighter, healthier drinks is leading millennials to non-alcoholic beer. Image source: Getty Images.

A market soon awash in near-beer

While Prohibition caused the popularity of non-alcoholic beer to explode as the Volstead Act set the maximum alcohol content to 0.5%, the law's repeal saw such brews fade, not least because they didn't taste very good (the one-half of one percent threshold lives on today, however, in the Alcohol & Tobacco Tax & Trade Bureau's definition of beer). Now they're making a big comeback.

Non-alcoholic beer is popular in many countries, particularly those with religious prohibitions on drinking. But in the U.S., O'Doul's is arguably the best known brand among designated drivers, as it was first introduced by Anheuser-Busch in 1990.

The near-beer now has a number of rivals, including Coors Non-Alcoholic, Genesee N.A., and Miller Sharp's. There are plenty of options within the brewer's own portfolio, too: Anheuser-Busch issued the non-alcoholic Budweiser Prohibition Brew two years ago, and over the past year launch 12 new no- and low-alcohol beers.

More to come

The newest addition will be under the Budweiser brand. According to the MillerCoors blog, the can will be all white, with the traditional Bud logo grayed out and the word "zero" printed in red. The label says it is "a fresh take on a classic recipe" stretching back to Prohibition, but the new packaging harkens back to the early days of generic branding when food came in white boxes with stark black letters.

Yet the push by Anheuser-Busch into near-beer shouldn't be surprising, as it said in 2016 it wanted low- and non-alcoholic beer to account for one-fifth of sales by 2025, up from about 8% currently.

Other brewers see the potential too. Heinken (HEINY -0.96%), for example, launched its 0.0 brand (pronounced "zero zero") earlier this year, and it has the distinction of actually having no alcohol. Next month MillerCoors will release Coors Edge with 41 calories, 8 grams of carbs, and less than 0.5% ABV. 

Looking for something different

As beer consumption has fallen, with flat to negative growth rates, and even craft beer has grown at only low, single-digit percentages, it seems the potential for healthier beer been realized. Analysts expect near-beer to become a $25 billion global market by 2025.

Still, there's always been something odd about the availability of non-alcoholic beer -- if people are interested in healthier lifestyles and they're trying to avoid alcohol consumption, there are plenty of beverages available, so why near-beer? Apparently they're still looking for beer, but now are adding in more low- and no-alcohol options.

The popularity of hard seltzer certainly suggests consumers are not looking to avoid alcohol altogether, but rather they want a drink that's lighter and more refreshing. It's not certain that near-beer fits the bill despite its sudden proliferation, but brewers seem intent on making a big splash with it.