This applies even if you plan to self-pay
Verified Patient Michele from Texas Reviews shown are from verified LifeMD patients across various services
Signals from the gut influence appetite, satiety, and energy balance through: The vagus nerve Hormonal signaling Microbial metabolites Key metabolic hormones produced or influenced by the gut include: GLP-1 (glucagon-like peptide-1) enhances insulin secretion and promotes satiety Peptide YY (PYY) signals fullness Ghrelin stimulates hunger When gut health is disrupted, these signals can become dysregulated, potentially contributing to overeating or impaired metabolic control
And that, after all, is the entire point
This complexity makes it difficult to pinpoint exact causes and create one-size-fits-all solutions
Genetics: Who Would Actually Respond The 23andMe Research Institute published a paper in Nature on April 8, 2026 (Su et al.) reporting the largest genome-wide analysis of GLP-1 receptor agonist response to date, drawn from approximately 28,000 self-reported users of weight-loss drugs in the 23andMe research cohort