The decline in estrogen after age 40 accelerates the loss of skin collagen, making collagen supplementation particularly relevant and effective for mature women compared to younger ones.

noli's read

It is physiologically established that the drop in estrogen during the transition of one's forties accelerates the reduction of cutaneous collagen, a fact widely documented by observational research. Regarding supplementation, a broad review of meta-analyses published in the Aesthetic Surgery Journal (2026) supports that hydrolyzed collagen promotes skin hydration and elasticity. Nevertheless, a meta-analysis of randomized controlled trials (RCTs) published by Dr. Myung in the American Journal of Medicine (2025) provides a significant caveat, showing that meaningful benefits primarily stem from low-quality or industry-funded studies. The assertion that collagen supplementation specifically targets and corrects the loss of firmness due to hormonal decline after age 40 therefore remains an appealing but exaggerated extrapolation. Although these supplements provide useful molecular building blocks for protein synthesis, solid and independent evidence that they can directly counteract the cutaneous effects of menopause is still lacking.

the sources

No named source held this one up — that absence is part of the verdict.