America can’t get enough protein. From whey smoothies to protein-packed pancakes, pasta, and ice cream, the muscle-building macronutrient has become the guaranteed solution to all health ills. “It’s this catchall,” Hannah Cutting-Jones, a food historian and director of food studies at the University of Oregon, tells Inverse. Want to gain muscle? Eat more protein. Lose weight? Focus on protein. Everybody, from your dog to your grandparents, needs more protein. But do they, really?