Intelligent Medicine Radio for July 13, Part 2: Is the glycemic index (GI) obsolete?

Study that claimed herbal supplements were devoid of active ingredients debunked; Can IV vitamin C help with blood-borne infections? Just 30 minutes of exercise boosts cancer-fighting white blood cells; The paradoxical effects of diet on a little-known but important cardiovascular risk factor—lp(a); A quarter century of research supports heart benefits of Coenzyme Q10; Is the glycemic index (GI) obsolete? Medicare Advantage pushes $50B in fake diagnoses.