Is BDNF useful for Haut?

BDNF (Brain-Derived Neurotrophic Factor) is primarily known for its role in neuronal survival and plasticity. However, it is also expressed in skin cells (keratinocytes, fibroblasts) and may influence wound healing, skin barrier integrity, and inflammatory responses. Some mechanistic and animal studies suggest BDNF involvement in conditions like psoriasis or delayed wound healing, but human evidence is limited and not yet clinically actionable. MyBody-X may include BDNF in some biomarker panels, but its utility for skin health is not well-established. Blood BDNF levels do not reliably reflect skin-specific status. Caveat: Do not use BDNF test results to guide skincare or supplementation without professional advice. For skin concerns, evidence-based approaches (e.g., moisturizers, sun protection, dermatologist evaluation) are more reliable. Evidence grade: mechanistic/unclear.