Collagen for Men: Do Men Need It, and Does It Actually Work?
Scarlett Gray
BNutrDiet (Hons), APD, SDA
Reviewed by Scarlett Gray · About Scarlett
Accredited Practising Dietitian with Dietitians Australia (APD200526). Accredited Sports Dietitian and Credentialled Eating Disorder Clinician. First Class Honours in Nutrition and Dietetics from the University of Newcastle.
Reviewed by Scarlett Gray, Accredited Practising Dietitian (APD200526), BNutrDiet Hons, Sports Dietitian. @scarlett__redefiningnutrition
Reviewed: 22 September 2026
Collagen supplementation is often positioned as a women's health product, but the biology tells a different story. Men lose collagen at the same rate as women, roughly 1% a year from the mid-twenties, and the consequences show up in skin, joints and recovery just the same. The difference is simply that fewer men know about it. Here's the honest picture: what collagen genuinely does for men, what it won't do, and how to take it properly. For the full background, our complete guide to liquid marine collagen is the place to start.
Do men actually need collagen?
Collagen is the most abundant protein in the human body, around 30% of your total protein, and the primary structural component of skin, bones, cartilage, tendons and ligaments. Men and women both produce it naturally, and both experience the same age-related decline of roughly 1% a year from the mid-twenties. For men, the changes that tend to matter most as collagen declines:
- Joints that feel stiffer. Collagen is a key structural component of cartilage and tendons, and many men first notice the decline as joints that take longer to warm up and recover after activity.
- Skin changes. Men's skin is around 20% thicker than women's but loses collagen at the same rate, with lines and loss of firmness typically becoming visible from the mid-thirties.
- Tendon and ligament resilience. Collagen provides the tensile strength of connective tissue, which matters most to men who train regularly.
Can men take collagen supplements?
Yes, completely. Collagen peptide supplements are derived from fish or bovine sources and are simply a highly absorbable form of dietary protein. There is nothing gender-specific about the supplement or its mechanism: the amino acids glycine, proline and hydroxyproline are used identically by male and female fibroblasts to synthesise new collagen, so the clinical research applies equally to men.
What are the benefits of collagen for men specifically?
Joint health and training recovery
For most men, this is the headline interest. Emerging evidence supports joint comfort with consistent collagen supplementation over 12 or more weeks, particularly alongside movement and training. One study in the British Journal of Nutrition found that collagen peptides combined with resistance training increased muscle mass and strength in older men compared with training alone, which is encouraging, though it's one trial in a specific population rather than settled science. Collagen is not a treatment for joint pain or any joint condition, and persistent joint pain belongs with your GP.
Muscle: the honest version
Let's clear up the biggest overclaim in men's collagen marketing. Collagen is not a muscle-building protein. It's an incomplete protein: it's missing the essential amino acid tryptophan entirely and is low in several others, so it cannot replace whey, meat, eggs or other complete protein sources for muscle building. Where it fits honestly is as an addition to the things that actually build and keep muscle: adequate complete protein and progressive resistance training. Collagen is roughly one-third glycine and supplies the amino acids used in connective tissue, so for men over 40 it's a sensible supporting habit alongside the fundamentals, never a substitute for them.
Connective tissue recovery
A developing area worth mentioning for active men: some emerging research suggests taking collagen around training may support the connective tissues, tendons and ligaments, that take the strain of regular exercise. Early evidence, honestly labelled as such, but it's the research area most relevant to men who train hard and recover slowly.
Skin
The best-evidenced benefit. Daily hydrolysed collagen consistently shows improvements in skin elasticity, hydration and the appearance of fine lines over 8 to 12 weeks in clinical trials, and men's thicker, higher-sebum skin loses collagen at the same rate as women's. For men who want to look after their appearance without a ten-step routine, a daily sachet plus sunscreen is about as simple as it gets.
Hair and nail condition
Emerging evidence for both. Amino acids from collagen serve as building blocks for keratin, the protein hair and nails are made of, and nail changes are often one of the earlier things people notice with consistent use. Our reviewed post on collagen and hair covers the evidence honestly, including what it can't yet show about hair loss.
Bone
Bone's protein framework is largely type 1 collagen, and emerging research is exploring collagen's role in bone density over long timescales, alongside the things that do the heavy lifting: calcium, vitamin D and weight-bearing exercise. Early evidence, worth watching rather than the reason to buy.
How much collagen should men take per day?
There's no official recommended intake for collagen. Clinical studies use 2.5 to 15 grams of hydrolysed collagen daily, with skin benefits shown from 2.5g and most joint and muscle research clustering between 5g and 15g. Each Kollo sachet delivers 10,000mg (10g) of Naticol® marine collagen peptides, at the top of the range used across the research, in one pre-measured daily serving.
Marine collagen vs bovine collagen for men
Both marine and bovine collagen are effective for men. Marine collagen has a smaller peptide size and is predominantly type 1 collagen, which is most relevant for skin, hair and structural tissue, and it suits men who avoid beef or pork for dietary or religious reasons. For the full comparison, read our marine vs bovine collagen guide.
When should men start taking collagen?
| Age | Collagen status | Sensible focus |
|---|---|---|
| Mid-20s to 30s | Decline beginning, ~1% per year | Skin quality, general support |
| 40s | Cumulative decline in skin and joints | Joint comfort, training recovery, skin |
| 50s and beyond | More noticeable structural change | Joint comfort, mobility, bone support alongside medical advice |
The earlier you start, the more you're maintaining rather than chasing, but the research includes benefits across age groups; it's not too late to start. Our guide to how long marine collagen takes to work covers realistic timelines.
Is collagen safe for men to take daily?
Marine collagen is a food-derived protein with no stimulants or hormones, generally well tolerated, with mild digestive effects possible when starting out. Kollo is Informed Choice certified, independently tested for over 250 prohibited and potentially harmful substances, which matters for men who compete in tested sport. It is not suitable for anyone with a fish allergy. Our reviewed post on marine collagen safety goes deeper.
Ready to try it? Kollo Premium Liquid Marine Collagen is the daily sachet; the 30-serving powder pouch offers the best per-serving value for at-home use. Either way, give it 8 to 12 consistent weeks and judge it on your own results.
Kollo Health was co-founded by Jenni Falconer — TV presenter, Smooth Radio breakfast host, ten-time London Marathon runner and host of the RunPod podcast. Read her story and why she created Kollo.
