what collagen actually does, in normal words

I bought my first collagen powder because someone I follow held a jar up on a Sunday morning and said it changed her skin. That was the whole reason. I did not know what collagen was, where it came from, or whether the amount in the scoop was enough to matter. I just liked her kitchen.

Then I actually read about it, and it turned out to be far more interesting than the jar suggested.

it is the scaffolding, not the paint

Collagen is a protein, and it is the most common one in your body. Roughly a third of all the protein you are made of is collagen. It is in your skin, your tendons, your joints, your bones, the walls of your blood vessels. If a protein like whey is fuel, collagen is frame.

That is why the conversation around it sounds so scattered. Skincare people talk about it. Runners talk about it. Your aunt with the bad knee talks about it. They are all talking about the same protein holding up different parts of the same body.

Once that clicked for me, collagen stopped being a beauty product in my head and became something closer to infrastructure.

you make less of it, starting earlier than you think

Your body builds collagen constantly, and the rate slows as you age. It slows sharply around menopause. Work by Brincat and colleagues, published in the mid 1980s and still cited today, found women lose a significant share of skin collagen in the first years after menopause, and that the loss tracks with hormonal change rather than simply with age.

Nobody mentioned that to me in my twenties. It is the single fact that changed how seriously I took this.

what the research shows

Skin is where the evidence is strongest. A 2021 systematic review and meta analysis in the International Journal of Dermatology pooled 19 randomised controlled trials covering 1,125 participants and found that hydrolysed collagen improved skin hydration and elasticity compared with placebo.

Nineteen randomised controlled trials is not a wellness rumour. That is the same kind of evidence structure used to evaluate things far more serious than a drink.

Joints have their own body of work, particularly in people with everyday activity related knee discomfort. Nails have a clean study showing faster growth and fewer breakages. Each of those has its own piece on this blog, because each deserves more than a bullet point.

the grams are the whole argument

Here is where the category gets frustrating. The trials that found something used real amounts, generally somewhere between 2.5 and 10 grams a day, taken consistently for weeks or months. Some used more.

What almost none of them used was the half gram of collagen sitting at the bottom of a can so the front of the can can legally say collagen.

Turn any of them around and find the grams. That one habit tells you more than every word on the front label combined.

where we landed

We put 20 grams of collagen protein in a can, from 22 grams of grass fed collagen peptides, because that sits at the top end of what has been studied rather than the bottom of it. Ninety calories. One gram of sugar, from fruit juice, none of it added. Lightly sparkling, because I was never going to keep up a routine that involved a shaker bottle and a sink.

Collagen is the material your body builds structure out of. Giving it a serious amount of that material, every day, in a form you will actually keep drinking, is one of the more sensible things you can do for yourself.

the research i leaned on

• de Miranda RB, Weimer P, Rossi RC. Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta-analysis. International Journal of Dermatology. 2021;60(12):1449-1461.
• Brincat M, Moniz CF, Studd JW, et al. Long-term effects of the menopause and sex hormones on skin thickness. British Journal of Obstetrics and Gynaecology. 1985;92(3):256-259.
• Clark KL, Sebastianelli W, Flechsenhar KR, et al. 24-week study on the use of collagen hydrolysate as a dietary supplement in athletes with activity-related joint pain. Current Medical Research and Opinion. 2008;24(5):1485-1496.

LÉS is a beverage, not medicine, and nothing here is medical advice.