Let’s be honest—turning 35 feels like someone flipped a switch on your body’s maintenance manual. One day you’re bouncing out of bed, the next you’re googling “why do my knees creak?” while slathering on anti-aging cream. If you’ve found yourself wondering whether collagen supplements are the fountain of youth or just expensive powder, you’re in the right place.
The collagen industry wants you to believe that popping a daily supplement will turn back time, but what does science actually say? Spoiler alert: it’s more nuanced than the Instagram ads suggest, but there’s some genuinely exciting research worth exploring.
The Collagen Reality Check: What Actually Happens After 35
Collagen production generally declines with age, although the rate varies between individuals and is influenced by factors such as sun exposure, smoking, nutrition and hormonal changes. Collagen is a structural protein that helps support skin, joints and other connective tissues..
But here’s where it gets interesting (and slightly depressing): women experience an additional collagen hit during perimenopause and menopause. Menopause-related hormonal changes can accelerate collagen loss in the skin, particularly during the years around menopause. The extent varies between individuals, and factors such as sun exposure, smoking and overall health also influence skin ageing.
The Science Behind Collagen Supplements: Separating Hype from Hope
Now for the million-dollar question: do collagen supplements actually work? The answer is surprisingly complex and more promising than skeptics suggest.
What the Research Really Shows
Some systematic reviews and clinical studies suggest that oral collagen supplements may modestly improve skin hydration, elasticity and the appearance of wrinkles. However, many studies are small, short-term or funded by supplement manufacturers, so the findings should be interpreted cautiously.
But here’s the catch—and it’s a big one. Most studies were funded by supplement companies, used small sample sizes, and lasted only 8-12 weeks. Independent research is still catching up, but the preliminary results are cautiously optimistic.
The Joint Connection
Research into collagen supplements for joint and bone health has produced some promising findings, including possible improvements in activity-related joint discomfort and certain measures of bone health. However, the evidence remains limited, and collagen supplements should not replace medical assessment or established treatment for persistent joint pain or bone loss.
The Types That Actually Matter (And the Ones That Don’t)
Not all collagen supplements are created equal—a lesson many women learn after purchasing expensive powders that taste like chalk and deliver questionable results.
Marine vs. Bovine vs. Chicken: The Great Collagen Debate
Marine collagen is usually derived from fish and commonly contains Type I collagen. It is often marketed for skin support, although product quality and supporting evidence vary. People with fish allergies should avoid it unless advised otherwise by a healthcare professional.
Bovine collagen is usually derived from cattle and commonly contains Types I and III collagen. It is widely available, but its benefits depend more on the specific product and evidence than on the source alone.
Chicken collagen is commonly associated with Type II collagen and is often marketed for joint support. Evidence differs between formulations, so the source by itself does not guarantee a particular result.
What Works (And What’s Just Marketing Fluff)
The Evidence-Based Approach
Dosage varies by product and purpose: Clinical studies have used different amounts and formulations, so there is no single dose that is appropriate for everyone. Follow the product instructions and seek professional advice if you have a medical condition or take regular medication.
Timing is unlikely to be the deciding factor: There is not enough evidence to show that collagen must be taken on an empty stomach. A balanced diet that includes adequate protein and vitamin C supports normal collagen formation.
Results are not guaranteed: Studies that report benefits generally assess regular use over several weeks or months, but individual responses vary.
The Lifestyle Factors You Can’t Ignore
Here’s what supplement companies don’t want to emphasize: lifestyle factors have enormous impact on collagen production and breakdown.
Sun protection is non-negotiable. UV radiation breaks down collagen faster than age alone. That SPF 30 might be more effective than any supplement.
Sleep quality directly affects collagen synthesis. Growth hormone, released during deep sleep, stimulates collagen production. Those 4-hour sleep nights? They’re aging your skin faster than you think.
Sugar intake matters more than most realize. Advanced glycation end products (AGEs) from high sugar consumption literally cross-link and damage collagen fibers. That afternoon cookie habit might be undermining your expensive supplements.
The Real Talk: Managing Expectations
Let’s address the elephant in the room: collagen supplements aren’t going to make you look 25 again. But they might help you look and feel like the best version of your current age.
What to Expect (Realistically)
- Skin: Some people may notice modest improvements in hydration or elasticity, although results vary.
- Joints: Some formulations may help with activity-related discomfort, but persistent pain should be medically assessed.
- Hair and nails: Evidence is limited, and reported benefits are not consistent.
- What collagen cannot promise: Dramatic anti-ageing results, guaranteed pain relief or reversal of bone loss.
The Bottom Line: Is Collagen Worth Your Money?
For women over 35, collagen supplements may offer modest benefits for some measures of skin or joint health, but the evidence is mixed and results vary. They are best viewed as an optional addition to a broader approach that includes balanced nutrition, sun protection, movement and appropriate medical care.
You may consider collagen supplements if you:
- Understand that any benefit is likely to be modest,
- Prefer to try them as an optional addition, not a replacement for medical care or a balanced diet,
- Are willing to assess whether they make a meaningful difference for you over time,
- Have checked suitability with a healthcare professional if you have allergies, medical conditions or take regular medication.
Skip them if you:
- Expect dramatic or immediate results,
- Would need to sacrifice more important priorities such as nutritious food, sunscreen or necessary healthcare,
- Have allergies to the product source or have been advised to avoid supplements,
- Prefer to obtain protein through food and do not feel collagen supplements are necessary
Making Smart Choices: Your Collagen Action Plan
If you decide to try a collagen supplement, use a practical and cautious approach:
- Check the product carefully: Choose a clearly labelled product from a reputable manufacturer and check for independent quality testing where available.
- Review the ingredients: Confirm the collagen source and avoid products containing allergens or unnecessary ingredients that do not suit you.
- Set realistic expectations: Benefits, if any, are likely to be modest and may take time to assess.
- Track what matters: Note any changes in skin comfort, joint symptoms or side effects rather than relying on marketing promises.
- Keep the foundations in place: Collagen supplements do not replace balanced nutrition, sun protection, movement, sleep or appropriate healthcare.
Research on collagen supplements is still developing. Some studies suggest modest benefits for certain measures of skin and joint health, but stronger independent and long-term research is still needed.
Healthy ageing is not about stopping time. It is about supporting your body through natural changes with realistic expectations, evidence-aware choices and habits that benefit your overall health.
Sources and medical note
This article is for general information only and is not a substitute for medical advice, diagnosis or treatment. Speak with a qualified healthcare professional before starting a supplement, particularly if you have allergies, a medical condition, are pregnant or breastfeeding, or take regular medication.
- Pu SY et al. (2023). “Effects of Oral Collagen for Skin Anti-Aging: A Systematic Review and Meta-Analysis.” Nutrients.
- Myung SK and Park Y. (2025). “Effects of Collagen Supplements on Skin Aging: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.” The American Journal of Medicine.
- Simental-Mendía M et al. (2025). “Effect of Collagen Supplementation on Knee Osteoarthritis: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.”
- Viscomi B et al. (2025). “Managing Menopausal Skin Changes: A Narrative Review.”
