This is a short transcript from a YouTube video (by Joy Kong, MD) explaining why bodies lose regenerative capacity with age. The speaker argues that osteoarthritis and chronic aches/pains are not solely 'wear and tear' — older bodies lose the regenerative power to repair tissue, which motivates interest in stem-cell–based approaches.
The osteoarthritis, or chronic aches and pains are not really exactly a result of wear and tear. Those were the precipitating factors. But if you think of yourself when you were a kid, five, six years old, you were wearing and tearing a body at a much higher degree, but your body fixed right up. So what happened when you're older and the person is still suffering from aches and pains and not healing up those tissues is because your body just doesn't have the regenerative power enough to actually fix it. That means your body is not keeping up with the repair. Yeah. Hence stem cells.
