Feb 24, 2026Skin Aging and Photoaging: Mechanisms, UV Damage, and Evidence-Based InterventionsSkin aging involves intrinsic (chronological) and extrinsic (UV-driven photoaging) components. UV radiation is responsible for approximately 80% of visible facial aging. Topical retinoids have the strongest evidence base for reversing photoaging signs. Oral collagen peptides have emerging RCT evidence for skin hydration and elasticity. Sun protection remains the highest-impact preventive intervention.
Feb 16, 2026Collagen Peptides: Joint Pain, Skin Aging, Bone Density, and Bioavailability EvidenceHydrolyzed collagen peptides are absorbed as dipeptides and tripeptides that accumulate in cartilage, skin, and bone tissue. RCTs show meaningful joint pain reduction in osteoarthritis and sports-related joint discomfort. Skin hydration and elasticity benefits are well-replicated. Evidence for bone density is emerging.