Superhuman power is near Scientists just found have a gut bacterium that can boost muscle strength 👀 Researchers have identified a gut bacterium called Roseburia inulinivorans that is associated with greater muscle strength and physical performance. The study, published in Gut, analyzed 124 participants and compared their gut microbiome with strength and fitness tests. People with higher levels of this bacterium showed stronger grip strength and better aerobic fitness, with older adults demonstrating up to 29% greater grip strength. In animal experiments, mice given the bacterium showed about a 30% increase in grip strength, suggesting gut microbes may influence muscle metabolism and the development of fast-twitch muscle fibers linked to power and strength.