Stories
Can Fermented Foods Boost Your Muscle Health Via The Gut Axis?
- •Researchers are increasingly focusing on the gut-muscle axis, a two-way communication network linking gut health to muscle function and metabolism.
- •A recent review explored whether protein-rich fermented foods like kefir, yoghurt, cottage cheese and tempeh can influence both gut and muscle health.
- •Gut microbes produce molecules that affect nutrient use, blood sugar regulation, inflammation, and the availability of amino acids essential for muscles.
- •Fermentation breaks down proteins for easier digestion, produces bioactive antioxidant compounds, and interacts with the immune system.
- •While direct evidence showing fermented foods improve muscle mass or strength is currently limited, they remain valuable sources of protein and nutrients for overall health.
Key Questions Answered
The gut-muscle axis is a two-way communication network between the gut and our muscles that links gut health and muscle health. Researchers found that the gut microbiome produces molecules affecting metabolism, inflammation, and nutrient use, while muscles produce signaling molecules that can influence the gut.
While protein-rich fermented foods like kefir, yoghurt, and cottage cheese influence gut health and metabolism, there is currently little evidence showing these changes directly improve muscle mass, strength, or muscle protein synthesis. Any benefits to muscle health appear to come through less direct routes such as lower inflammation or microbiome changes.
Microbes break down proteins to make them easier to digest and amino acids more available, while also producing bioactive compounds with potential antioxidant or anti-inflammatory effects. These microbes can interact directly with the gut microbiome and immune system to influence wider health.
