Dr. Bret Scher, medical director of the Coalition for Metabolic Health, discusses making metabolic health the foundation of medicine amid rising obesity and type 2 diabetes and reports that 93% of Americans have suboptimal metabolic health. Scher defines metabolic health using markers including glucose, insulin, triglycerides, HDL, blood pressure, and waist size, and cites evidence linking insulin resistance to heart disease, stroke, cancer, psychiatric illness, and other complications. They discuss simple self- and lab-assessments (waist-to-height ratio, fasting insulin with glucose/HOMA-IR, triglyceride-to-HDL ratio, CGMs). Scher critiques the Eat Lancet report for assuming one optimal diet, reliance on low-quality nutrition epidemiology, potential nutrient shortfalls, and environmental oversimplification, while supporting newer dietary guidelines that allow lower-carb approaches. Part two covers contradictory nutrition studies, distinctions between low-carb and ketogenic diets, emerging “metabolic psychiatry” and ketogenic therapy for mental illness and cognitive decline, limits and rebound risks of GLP-1 drugs, and Coalition efforts to improve school food and influence policy.
