This story is part of Junk Food, Redefined, our new collection of snack recommendations, recipes, and perspectives that celebrate an undervalued food group. Read all the stories here.What’s an adaptogen? Who makes the best gummy candies? Will this can of soda actually change my life? These are the big questions in the world of snacks, a space rife with buzzwords and hype. In particular, ‘functional’ snacks—foods that claim to provide more than plain nourishment—have presented a seductive logic. I want better health, better sleep, and a better life, and if a bag of chips promises those things, I want to believe it could be true.