
Gut health and weight loss: The science behind why some men struggle to lean out

Lower gut microbiome diversity and certain microbiota patterns (including a higher Firmicutes-to-Bacteroidetes ratio in some studies) are associated with increased “energy harvest” from food and altered metabolite-driven appetite and metabolic signaling, which can make fat loss harder even when calories are similar. Here’s how the gut–metabolism connection shows up in real life and what to ...




