About this episode

This episode explores the relationship between muscle function and obesity, challenging common misconceptions about muscle mass and insulin resistance.

Muscle is where most of the glucose goes, and muscle insulin resistance is the first thing that breaks on the road to type 2 diabetes. Both of those are true, and neither one means that building more muscle is the treatment for obesity. This episode works through what actually decides whether a tissue handles fuel well: not how much of it you have, but how fast it's moving fuel through. We go through the one-legged exercise studies, the 18,000-person analysis of what body composition actually predicts, the athlete's paradox, the energy cost of building a kilogram of muscle, the GLP-1 lean mass panic, and why sarcopenic obesity is named after the wrong organ. This is part two of a two-part series on storage capacity. Part one covered where body fat goes and what happens when the storage runs out. Timestamps 0:00 The one-leg study, and the muscle-centric claim 02:06 What obesity is, and the garage analogy 05:06 How glucose gets into a muscle cell 11:21 Insulin sensitivity improves without building muscle 17:11 The best case for muscle-centric medicine 21:13 What predicts falls and death: strength, not lean mass 25:18 Separating muscle size from muscle function 31:33 Liver fat…

People in this episode

Host: Barbell Medicine

Topics covered

• obesity
• muscle function
• insulin sensitivity
• body composition
• sarcopenic obesity
• energy cost of muscle
• storage capacity

Keywords

• obesity
• muscle
• insulin resistance
• type 2 diabetes
• sarcopenic obesity
• energy cost
• body composition
• GLP-1
• calorie deficit

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