Whether adaptogen soda or protein coffee are your proverbial cup of tea, or you’re sticking to a good old-fashioned sugar soda, it seems that “functional,” health-focused beverages are here to stay.The functional beverage market has been growing since 2021, and is nearing $340 billion, said Monica Petrucci, an editor at Forbes. Its growing popularity with Gen Z has prompted large beverage brands like Starbucks and Pepsi to get in on the trend. "Folks are less interested in quote-unquote empty calories, right? They're interested in beverages — and also snack foods in general — that make the most of everything that they're eating and drinking,” Petrucci said.“Marketplace” host Kai Ryssdal spoke with Petrucci about her reporting.Click the audio player above to hear their conversation.