Calming the fire
John Davies — “JED” to everyone — is a Toronto scientist who has spent a career with stem cells, and he explains them with unusual clarity. Start with the mesenchymal stem cell (MSC): a cell that gives rise to the body’s connective tissues — bone, cartilage, ligaments, tendons, fat. That alone makes MSCs central to repair.
But the real surprise, discovered years ago, is a second property: MSCs are anti-inflammatory. Inject them into a person with an inflammatory disease and they have a profound calming effect on the immune process. They don’t just build structure — they modulate the body’s inflammation.
And here is where it meets longevity. “When you think about it,” JED says, “ageing is, in fact, an inflammatory disease.” So much of how and why the body ages comes down to chronic, low-grade inflammation — the “inflammaging” researchers now talk about. A biologic that can turn that fire down is, potentially, a longevity tool. That’s why he sits in Biohacking Upgrades, on the repair side.
He is also refreshingly grounded — as quick to ask “but why?” and to weigh treating today’s real diseases against grand promises as he is to enthuse. Add exosomes — the tiny signalling packages cells release — and you have a picture of regenerative medicine as it actually is: promising, specific, and worth understanding properly.
