47. How Muscles Drive Metabolism - with Dr. Gabrielle Lyon

Muscle Mass

Muscle mass is essential for maintaining metabolic health and a robust immune response. Gabrielle Lyon explains that losing just 10% of muscle mass can significantly impact your body's ability to function properly, including a decrease in tissue quality and immune response 1. She emphasizes that muscle defects, not fat, are often the root cause of metabolic issues, as muscle tissue is crucial for glucose and fatty acid utilization 2.

The reality is we have a failure of the fat-focused paradigm. It's not real. What happens is the muscle gets defects in it first, so the muscle becomes defective. There's an inability to use the substrate, whether it's glucose or fatty acids.

--- Gabrielle Lyon

Focusing on muscle health rather than just fat loss can lead to better long-term health outcomes.

   

Endocrine Organ

Muscle is not just for strength and mobility; it is the body's largest endocrine organ. Gabrielle Lyon describes how muscle contractions release myokines, which have anti-inflammatory properties and support brain health 3. She also highlights that muscle deterioration begins as early as your thirties, emphasizing the importance of maintaining muscle mass to prevent age-related diseases 4.

Muscle does many things. When you contract skeletal muscle, it secretes substances called myokines, making it an organ, a separatory organ. These myokines travel throughout the body. They are anti-inflammatory. They help with substrate utilization, meaning the foods that we eat.

--- Gabrielle Lyon

Maintaining muscle mass is crucial for overall health and longevity.

   

Preventing Loss

Preventing muscle loss involves resistance training and adequate protein intake. Gabrielle Lyon advises lifting heavy or going to perceived failure to maintain muscle mass and prevent sarcopenia 5. She also emphasizes the importance of consuming protein right after workouts to optimize muscle protein synthesis 6.

You have to move your body against resistance. And that would be a three to four day a week kind of a thing. You can have a very well-designed program, but you have to put in the effort, and that's a big change for a lot of women.

--- Gabrielle Lyon

Consistent effort and proper nutrition are key to preserving muscle health as you age.

   

Metabolic Health

Muscle tissue plays a significant role in metabolic health and blood sugar regulation. Gabrielle Lyon explains that muscle acts as a major site for glucose disposal, helping to maintain stable blood sugar levels 7. Kelly LeVeque adds that blood sugar imbalances can derail health goals, making muscle health even more critical 8.

The blood sugar roller coaster can really derail people's goals and plans when they're crashing out. And then they can't think straight to make a decision to focus on protein again.

--- Kelly LeVeque

Maintaining muscle mass is essential for metabolic stability and overall health.

   

Glucose Disposal

Muscles are crucial for glucose disposal and maintaining metabolic health. Gabrielle Lyon describes muscle as a metabolic currency that helps determine your carbohydrate threshold and supports your immune system 9. She also recommends training in a low glycogen state to enhance muscle's glucose disposal capabilities 10.

Muscle is the site for glucose disposal. So we talked about that. If you don't want to put on adipose tissue, if you don't want to get diabetes, you want to make sure that your muscle is able to dispose of that glucose.

--- Gabrielle Lyon

Optimizing muscle health can significantly improve your body's ability to manage glucose and overall metabolic health.