What role does MC4R play in gut health?

MC4R (melanocortin 4 receptor) is primarily expressed in the brain and regulates appetite and energy balance. A direct role in gut health is not well established. Some research suggests possible involvement in gut motility or the gut-brain axis, but evidence is weak and inconsistent. MC4R variants are linked to obesity risk, not to specific gut health markers. Therefore, a DNA test for MC4R does not provide clinically actionable insights for gut health. Claims that MC4R is a 'gut health gene' are overstated and not supported by robust human studies. For gut issues, consult a physician rather than relying on direct-to-consumer genetic tests.