Evidence check: MC4R in the context of Fruchtbarkeit

MC4R encodes the melanocortin 4 receptor, a key regulator of energy balance and appetite. Variants such as rs17782313 are strongly associated with obesity. In the context of fertility, MC4R is part of the leptin-melanocortin pathway that modulates GnRH release and thus the hypothalamic-pituitary-gonadal axis. However, direct evidence linking MC4R variants to human fertility outcomes is limited. Most data come from animal studies or indirect associations via obesity-related infertility. The evidence is therefore mechanistic rather than clinically established. Consumer DNA tests may include MC4R in obesity panels, but fertility claims are not supported by robust human data. MyBody-X does not appear to test MC4R based on the provided context. Safety note: No direct risks, but avoid overinterpretation.