Are carbohydrates really the enemy? Is all fiber created equal? Have decades of diet trends distracted us from what actually matters? In this episode of The Dr. Plant Podcast, Dr. Joshua Plant sits down with Dr. David Jenkins, the pioneering nutrition researcher who helped develop the glycemic index, to challenge common misconceptions about food and health. They explore how different carbohydrates affect blood sugar, why certain types of fiber can help lower cholesterol, what happens when you refrigerate foods like potatoes and pasta, and why popular diets don't always align with established science. Dr. Jenkins also shares the research behind the Portfolio Diet and explains why eating more whole, plant-based foods may benefit both our bodies and the planet. Sponsored by The Science Standard.