What role does LDL play in Haut?

LDL (low-density lipoprotein) is primarily a blood lipid transporter and not a direct component of the skin barrier. The skin's protective layer consists mainly of ceramides, free fatty acids, and cholesterol – not LDL. However, elevated LDL levels can indirectly influence skin aging and conditions like psoriasis or acne through oxidative stress and inflammation. Oxidized LDL particles may trigger inflammatory responses in the skin and impair wound healing. The evidence is mostly mechanistic or from observational studies; large clinical trials are lacking. Consumer DNA tests that claim a direct role of LDL in skin health are overstating. High LDL is primarily a cardiovascular risk factor, not a skin issue. For better skin health, focus on a balanced diet rich in antioxidants and healthy fats, not solely on LDL levels.