If the cells in our body are replaced every 7 to 10 years, why cant it roll itself back into a position where it worked better than it does now?

Question

For example: Someone has a disease, why cant the body just reset itself to how it was before it had the disease to get rid of the negative effects?

In: Biology

Answer 1

Bodies don’t magically change every cell all at once… rather cells all k we die and replace all the time so that after about seven to ten years the cell that are now present are different than the ones that were there 12 years ago…

Plus every time a cell regenerates there is a chance for an error to happen causing more errors etc.

The cells do not necessarily regenerate to a “brand new” best ever model, more they replicate their current state… this is part of aging.

Work in figuring out how to control this process is one avenue of anti aging and anti disease research!