After 45: Why Protein Distribution, Leucine Threshold & mTOR Signaling Determine Whether You Build or Lose Muscle

If you're over 45 and training consistently but noticing slower recovery, softer body composition, or declining strength — this episode is for you. In this deep-dive rabbit hole conversation, Debbie breaks down the real science of Muscle Protein Synthesis (MPS) and why protein distribution — not just total protein — becomes critical in midlife. You'll learn why 20–30 grams of protein often isn't enough anymore, why adults 45+ may need 3–4 grams of leucine per meal to fully activate mTOR signaling, and how anabolic resistance changes the muscle-building equation for both men and women. We also explore AMPK vs mTOR balance, chronic fasting and endurance training effects, insulin resistance, stress-driven cortisol interference, and how PNOĒ metabolic testing and genetic insights can personalize your muscle-building strategy. Midlife isn't decline — it's a threshold shift. When you understand the signaling, you can train smarter, fuel intentionally, and protect your metabolism for decades to come. Learn more about personalized testing and The FutureYou Blueprint™ at www.debbiepotts.net