Fiber Gummies, Protein Everything, and GLP-1 Vitamins: What's Worth Buying?

Protein water. Protein chips. Fiber soda. Fiber gummies. "GLP-1 support" vitamin packs. In 2026 the grocery aisle is full of products promising to help you lose weight — but supplements don't have to prove they work before they're sold. In Episode 1 of Supplement Truth — our five-part series inside the Five Factors of Medical Weight Loss — Dr. Greg Oliver grades the biggest nutrition supplement trends on a simple scale: Proven, Promising, Unproven, or Potentially Harmful. You'll learn which fiber supplement has real research behind it, why collagen isn't the muscle-protecting protein you think it is, what people on semaglutide or tirzepatide actually need, and how to buy a supplement that contains what the label says. Here's the link to the Scorecard: https://1drv.ms/w/c/4a3b304bf0da2091/...