Do collagen and bone broth actually work?

The anatomy, simply

Tendon, ligament, and fascia are largely collagen. Collagen is built from glycine, proline, and hydroxyproline, and building it requires vitamin C. Mechanical load is the signal that tells the body where to lay new fibres down.

Why it happens

This is the supplement I get asked about most, so here is the honest version with the good and the disappointing parts together.

What to try today

If you try it: 10 to 15 grams of collagen peptides with a source of vitamin C, about half an hour before the movement or session that loads the sore tissue.

Why the scoop does not go straight to your knee

Common objection, and a fair one. You eat collagen, it gets broken down like any protein, so how would your body know to send it to your knee?

The interesting part is that collagen peptides are not fully broken down. Some di and tripeptides show up intact in the blood, and they seem to act as a signal as well as a material. Not a delivery van. A memo.

That is the mechanism people find surprising, and it is the reason this has not been laughed out of the room.

What the research actually supports

Trials on collagen peptides for joint pain and tendon discomfort mostly show modest improvements. Not miraculous. Real, and small.

The most consistent protocol pairs collagen with vitamin C and takes it around half an hour before loading the tissue, so the building blocks are circulating while the tissue is being asked to adapt.

Without the loading, the signal has nowhere to go. That part is not optional.

Bone broth, honestly

I like bone broth. It is warming, it is comforting, it carries minerals and amino acids, and half the world has been making it for centuries for good reason.

But the collagen content varies wildly batch to batch, and the clinical evidence is thin. So drink it because it nourishes you and you enjoy it, not because it is a joint treatment.

Vitamin C is the quiet one

You cannot build collagen without it. Your body needs it at the exact step where collagen fibres are stabilised.

Most people get enough. But if your diet is low on fruit and vegetables and your tendons are struggling, this is worth a look before anything fancier.

The part that matters more than any of it

Connective tissue remodels in response to load. Slow, controlled, progressive load.

So the order is: create space in the tissue, then load it, then feed it. A powder without the load is money for nothing. Load without the materials is slower than it needs to be.