Menopause and Skin: Why Collagen Drops

Menopause lowers skin collagen because estrogen is a direct signal for the cells that make it. During the first five years after menopause, you can lose up to a third of your skin’s collagen content, with a further decline of about 2.1% each year after that, which affects skin thickness, elasticity, and firmness. The same estrogen drop also shifts immune balance toward chronic inflammation, which GlycanAge measures. For the full picture of tracking hormonal aging, read Menopause, HRT & Biological Age: The Definitive Guide to Tracking Hormonal Aging.

Skin is often the first place women notice estrogen loss. The answers below explain why collagen falls, how inflammation fits in, and what you can track.

Why does collagen drop during menopause?

Collagen drops in menopause because estrogen stimulates the skin cells that produce it, and menopause removes that signal. Fibroblasts in the dermis carry estrogen receptors, and when estrogen binds, it helps regulate the genes that produce type I and type III collagen. When estrogen drops, fibroblasts lose a key signal to make new collagen. The result is a loss that tracks menopause timing more closely than calendar age. Research has found that skin collagen content declines in relation to years since menopause rather than chronological age.

How much collagen do women lose after menopause?

Women can lose up to a third of their skin collagen in the first five years after menopause, followed by a decline of around 2.1% a year after that. The figure refers to types I and III collagen. Skin thickness declines alongside it. Women often notice dryness, thinning, wrinkles, itching, and loss of firmness. If you are in perimenopause, the transition before your periods stop, the loss has often started already.

What does chronic inflammation have to do with menopausal skin?

Estrogen acts as an anti-inflammatory agent, so its loss lets low-grade, whole-body inflammation build alongside collagen loss. Chronic inflammation is inflammation that continues without resolving, unlike the short-term response to an injury or infection. Women in the premenopausal state have high anti-inflammatory glycans and low pro-inflammatory glycans; after menopause, the anti-inflammatory ones fall and the pro-inflammatory ones rise. Glycans are complex sugars attached to immune antibodies that act as switches between pro- and anti-inflammatory states.

“In this perimenopausal period, we see glycans change very quickly — from glycans that suppress inflammation into glycans that actually promote it. We believe this isn’t just a biomarker; it’s a molecule that’s causing damage, because it’s promoting inflammation.”

— Prof. Gordan Lauc, Professor of Biochemistry and Molecular Biology, University of Zagreb, and Co-Founder & Chief Scientific Officer, GlycanAge

This shift builds chronic inflammation as estrogen is lost. Skin collagen loss and rising inflammation share the same hormonal trigger, which is why we treat them as parallel signals. Understanding how sugars shape skin health provides deeper insight into how these molecular changes manifest as visible aging.

Can a glycan test measure what is happening to my skin?

No. Collagen and skin condition aren’t what it measures. What GlycanAge tracks is glycan patterns on IgG antibodies, which reflect your immune system’s inflammatory state and biological age. Skin changes are a visible effect of estrogen loss; glycans reveal the inflammatory biology running alongside it. It is not a diagnostic tool — it supports tracking and clinician interpretation. Use it to see whether your menopause strategy is shifting your inflammation profile, not as a skin measurement.

Does estrogen loss change biological age?

Yes. Estrogen loss raises glycan-based biological age, and the effect has been demonstrated in a controlled trial. GlycanAge researchers measured baseline glycan age in 36 women, then suppressed their hormones to induce a postmenopausal state. Women on placebo saw inflammation levels rise sharply, while women given estrogen therapy stayed essentially unchanged. Presentations by our team report that glycan age returned to baseline once normal cycling resumed. This points to estrogen as the driver of the shift, not age alone.

Why do women age differently from men on a glycan clock?

Men’s glycans change in a straight line with age, while women follow a curve. Women start with lower inflammation than men; the curve then climbs steeply around perimenopause until the two sexes converge. This means a woman’s chronological age is a weak guide to her inflammatory age in midlife. Measuring directly shows where you sit on that curve.

Does hormone therapy help skin, and can I track whether it works?

Hormone therapy supports skin collagen in controlled studies, and glycans give you a second readout on the inflammatory side. Clinical trials have shown that oral estrogen therapy can increase dermal thickness and skin collagen content in postmenopausal women over periods of six months to a year. Early starts matter. A 2025 narrative review found that therapy started in the early postmenopausal window can help preserve skin collagen and slow the decline in dermal thickness.

Hormone therapy is not suitable for everyone, and the decision belongs with a menopause specialist who knows your medical history. If you and your clinician start it, GlycanAge lets you check the inflammatory response. For HRT and other pharmaceutical interventions, meaningful change typically shows up within 3–4 months, so retest on that schedule rather than weekly. Take your baseline before you start.

What else can I do to protect skin collagen?

Protecting collagen goes beyond hormone therapy. Daily sun protection is one of the most effective steps, since UV exposure accelerates collagen breakdown. Avoiding smoking, maintaining a balanced diet with adequate protein, and using evidence-based skincare such as topical retinoids can also help support skin health. If you're considering hormone therapy, discuss its potential benefits and risks with your clinician.

Is it worth testing before I notice skin changes?

Yes, because glycan shifts begin in perimenopause, often before symptoms are obvious. In a controlled trial, GlycanAge researchers saw biological age rise by around nine years within six months of induced hormone suppression. Real-world data shows a similar scale of change, with GlycanAge rising by around a decade on average across the natural menopause transition. A baseline taken early gives you and your clinician a reference point for every decision that follows. Skin changes tell you estrogen has fallen; what that drop is doing to your immune aging is what GlycanAge reveals.

If you are in perimenopause or menopause and want an objective baseline, order a GlycanAge test kit and book your 1:1 Result Interpretation Call to plan your retest window.

External sources

• Kamp E, Ashraf M, Musbahi E, DeGiovanni C. Menopause, skin and common dermatoses. Part 2: skin disorders. Clin Exp Dermatol. 2022;47(12):2117–2122. doi:10.1111/ced.15308. Available from: https://pmc.ncbi.nlm.nih.gov/articles/PMC10092853/

• Viscomi B, Muniz M, Sattler S. Managing menopausal skin changes: a narrative review of skin quality changes, their aesthetic impact, and the actual role of hormone replacement therapy in improvement. J Cosmet Dermatol. 2025;24(Suppl 4):e70393. doi:10.1111/jocd.70393. Available from: https://pmc.ncbi.nlm.nih.gov/articles/PMC12374573/