Metabolic Health is the biggest medical breakthrough of the moment

We have one of the world's experts on the liver - the place your body stores lots of energy from food, and distributes it onward to other systems, Dr. Waj Mehal of the Yale School of Medicine.

We lay out a map of the systems in digestion and metabolism, weight loss and exercise -- plus the different pathways that GLP-1s like Ozempic are using, and what else expected or unexpected is going on in our bodies