Do collagen supplements actually work? What about biotin for hair growth, or greens powders for glowing skin? The beauty supplement industry is worth $70 billion, and it's built on a foundation of insecurity, pseudoscience, and promises your liver already keeps for free.

Endurance athletes: tired, cold, or burned out? You might be dealing with RED-S, Relative Energy Deficiency in Sport. In this episode of Your Diet Sucks, Zoë Rom and Kylee Van Horn, RDN, explain the science of under-fueling, early warning signs, and how to recover strong.