Your doctor says your magnesium is normal. But that test measures less than 1% of your body's total magnesium. Nearly half of US adults are deficient in the mineral required for 600+ enzymatic reactions, every ATP molecule, insulin signaling, blood pressure, heart rhythm, and sleep. CHAPTERS: 00:00 — Introduction 00:55 — Part 1: The Hidden Deficiency 02:10 — Soil depletion 02:55 — 80% lost in food processing 03:25 — Serum test only measures 1% 04:30 — Part 2: The Insulin Connection 04:55 — Mg required for GLUT4 and insulin signaling 06:45 — 22% lower diabetes risk with higher Mg 07:45 — Part 3: Heart, Blood Pressure, Inflammation 08:05 — 36% lower CVD risk 08:40 — Mg lowers BP 2.8 mmHg 10:10 — Part 4: Sleep and the Nervous System 10:30 — Mg activates GABA, blocks NMDA 11:30 — RCT: improved sleep, deep sleep, HRV 12:00 — Part 5: What to Do 12:15 — Get RBC magnesium test 13:00 — Best forms: glycinate, threonate, citrate REFERENCES: Global Deficiency 2.4B (Int J Vitam Nutr Res, 2025): pubmed/41504160 Soil Depletion 80% Loss (Heliyon, 2020): PMC7649274 Mg + GLUT4 Insulin Signaling (Frontiers Endocrinology, 2022): fendo.2022.786516 Mg + T2D Risk 536K Participants: pubmed/21868780 Mg + CVD Review (Nutrients, 2024): PMC11013654 Mg Lowers BP — 38 RCTs (Hypertension, 2025): pubmed/40145305 Mg + Sleep Quality (2024): pubmed/38455453 HOST: Dr. Robert Lufkin MD | robertlufkinmd.com New episodes every Tuesday & Thursday. Subscribe so you don't miss one. Continue this conversation on Substack: https://robertlufkinmd.substack.com Lies I Taught In Medical School — Free sample chapter: https://www.robertlufkinmd.com/lies/ Web: https://www.robertlufkinmd.com YouTube: https://www.youtube.com/robertlufkinm d X: https://x.com/robertlufkinmd Instagram: https://www.instagram.com/robertlufkinmd/ TikTok: https://www.tiktok.com/@robertlufkin LinkedIn: https://www.linkedin.com/in/robertlufkinmd/