Collagen for women over 50: what trials show

Updated November 3, 2026. For information only, not medical advice. This guide has no affiliate links. It links to one best-of page that may carry them (see our affiliate disclosure).

In a nutshell

• Skin: reviews of human trials report better skin hydration, elasticity and wrinkles with collagen. But a 2025 review found those benefits only in trials funded by pharmaceutical companies, not in the others. Rating: Mixed.
• Bone: one 12-month trial in postmenopausal women with low bone density found small gains in bone density scores. It was partly funded by a collagen maker. Rating: Early.
• Who was studied: humans. One skin review covered adults aged 20 to 70, and the abstracts we read do not report women over 50 separately. The bone trial was in postmenopausal women aged 46 to 80.
• Beauty and joint claims: we make none. This is not a treatment for any condition.

Skin: meta-analyses and why funding matters

Basis: PMIDs 33742704, 37432180, 40324552.

• de Miranda 2021: 19 randomized trials, 1,125 people aged 20 to 70 (95% women). Hydrolyzed collagen (collagen broken into small pieces) improved skin hydration, elasticity and wrinkles versus placebo, with benefits after about 90 days.
• Pu 2023: 26 trials, 1,721 people. Hydration and elasticity improved, but the authors found “several biases” in the trials and called for larger ones.
• Myung and Park 2025: 23 trials, 1,474 people. Overall, collagen improved hydration, elasticity and wrinkles. But in trials not funded by pharmaceutical companies there was no effect, and high-quality trials showed no significant effect on any of the three. The authors concluded there is currently no clinical evidence to support collagen supplements to prevent or treat skin aging.

These reviews disagree, and funding is one reason to be careful: in the 2025 review, trials funded by pharmaceutical companies showed an effect and the rest did not. We read only the abstracts of these three reviews, so we cannot say who funded each review. Collagen may help skin a little, but the evidence is not solid.

Bone: the one trial in postmenopausal women

Basis: PMID 29337906.

We found one randomized trial of collagen in postmenopausal women with low bone density (König 2018). It had 131 women (average age 64) who took 5 g a day of a specific collagen peptide product or a placebo for 12 months. In the analysis of all women, bone density scores at the spine rose by 0.1 with collagen and fell by 0.03 with placebo (p = 0.030), and at the femoral neck rose by 0.09 versus a fall of 0.01 (p = 0.003). Bone marker blood tests also shifted in a way the authors called favorable.

Caution: it is one trial of 12 months, the differences are small, and the abstract does not report fractures. Part of the funding came from GELITA AG, which makes the collagen product used; the authors declared no conflict of interest and said they alone planned and analyzed the study. This does not make collagen a treatment for weak bones. Speak to your doctor about bone health.

Doses used and side effects

Basis: PMIDs 29337906, 38218227.

The one dose we can report for bone is 5 g a day for 12 months. The skin reviews we read pool different products and doses, and we did not extract per-trial doses. That is information about studies, not advice.

On safety, the bone trial noted no adverse events. A 2024 review of 35 trials in people with osteoarthritis found collagen products did not raise the risk of side effects or dropping out compared with the control. That was a different group from healthy women, so it only partly applies. If you take medicines or have a health condition, speak to a doctor or pharmacist first.

FAQ

What are the benefits of collagen for women over 50?

Reviews of trials report better skin hydration, elasticity and wrinkles, but a 2025 review found no effect in trials without pharmaceutical funding. One 12-month trial in postmenopausal women found small gains in bone density scores. The evidence is mixed for skin and early for bone, and only the bone trial was in postmenopausal women.

Basis: US Google autocomplete, November 3, 2026 (“collagen for women over 50 benefits”); PMIDs 33742704, 40324552, 29337906.

Is collagen worth it for women over 50?

The evidence does not clearly say. Skin results are mixed, and funding matters: the 2025 review found no significant benefit in high-quality trials or in trials without pharmaceutical funding. Bone evidence comes from one partly company-funded trial. If you try it, treat it as an experiment, not a proven fix, and speak to a doctor or pharmacist first if you take medicines.

Basis: US Google autocomplete, November 3, 2026 (“collagen for women over 50 reviews”); PMIDs 40324552, 29337906.

What is the best collagen for women over 50?

We cannot say one type is best, because the trials we read do not compare products. Our best collagen page compares powders by price per serving and per gram of collagen, with named testing noted. We name no brand here. That page may contain affiliate links.

Basis: US Google autocomplete, November 3, 2026 (“best collagen for women over 50”); our /best/collagen/ page; PMIDs 33742704, 37432180.

What this means for you

What this means for you

• Skin: results are mixed, and the one review that split trials by funding found no benefit without industry funding. Evidence rating: Mixed.
• Bone: one 12-month trial, partly funded by a collagen maker. Evidence rating: Early.
• Dose studied for bone: 5 g a day. Not advice.
• Safety: no adverse events in the bone trial. Ask a doctor or pharmacist first if you take medicines or have a health condition.
• Products: see our best collagen page, which may contain affiliate links (see our affiliate disclosure). For the wider picture, read our guide to longevity supplements for beginners and our collagen beginner’s guide.

Sources

Pages were opened on November 3, 2026.

1. de Miranda RB, Weimer P, Rossi RC. Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta-analysis. Int J Dermatol 2021. PubMed
2. Pu SY et al. Effects of oral collagen for skin anti-aging: a systematic review and meta-analysis. Nutrients 2023. PubMed
3. Myung SK, Park Y. Effects of collagen supplements on skin aging: a systematic review and meta-analysis of randomized controlled trials. Am J Med 2025. PubMed
4. König D et al. Specific collagen peptides improve bone mineral density and bone markers in postmenopausal women: a randomized controlled study. Nutrients 2018. PubMed · PMC full text
5. Liang CW et al. Efficacy and safety of collagen derivatives for osteoarthritis: a trial sequential meta-analysis. Osteoarthritis Cartilage 2024. PubMed

This article is for information only and is not medical advice. Speak to a healthcare professional before changing medication or supplements.