Does Collagen Actually Work?
Quick Answer
Actually, yes. Skeptics say "it's just protein that gets digested." That's partly true but misses the point. Hydrolyzed collagen peptides do get absorbed, do reach target tissues, and do show measurable benefits in studies. Skin and joints are the best-supported uses. Results are modest, not miraculous.
Key Points
- Peptides do get absorbed. That's proven.
- Skin benefits: 8+ weeks, real improvements
- Joint benefits: 3-6 months, requires patience
- Type I/III for skin, Type II for joints
- Modest but measurable. Not snake oil.
Detailed Answer
The "it just gets digested" critique is technically correct but misses what actually happens.
Collagen peptides break down into smaller peptides and amino acids. Here's the thing: some of those peptides survive digestion intact, reach your bloodstream, and signal your cells to produce more collagen. They're not just building blocks. They're messengers too.
What the research shows: - Skin: Meta-analyses confirm improved hydration and elasticity after 8+ weeks. Real effect. - Joints: Reduced pain in athletes and arthritis patients after 3-6 months. Takes patience. - Bones: Emerging evidence when combined with calcium and vitamin D. - Hair/nails: Some nail strength data. Hair evidence is weaker.
Is it going to make you look 20 again? No. But placebo-controlled studies show statistically significant improvements. It's not nothing.
Evidence Quality
Some quality studies, more research helpful
Key Sources:
- reviewOral Collagen for Skin Aging: Meta-Analysis (2021)
- reviewCollagen Peptides for Joint Pain: Systematic Review
- studyBioavailability of Collagen Peptides Study
Related Questions
Skin: 8-12 weeks. Joints: 3-6 months. Nails: 3-4 months. This isn't overnight stuff. Consistency over months is what gets results.
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