If repeated cellular damage can cause cancer but that’s also how muscle is built, why isn’t weight lifting a cancer risk?

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To build muscle you are tearing the muscles and letting it heal. Does this not increase risk of mutations that might turn into cancer like how repeated damage to skin or lung cells can cause cancer?

I don’t think it is a cancer risk but I would like an explanation as to why.

In: Biology

6 Answers

Anonymous 0 Comments

The damage incurred by muscle building is more about tearing groups of cells apart. The cells themselves are largely fine, they simply repair their connections to one another, stronger than they were before. Cancer, on the other hand, is damage to each individual cell, causing them to go haywire and replicate without anything stopping them.

Consider: you have a concrete bridge. Muscle growth would be like tearing down the bridge piece by piece and building a bigger, stronger bridge in its place. Cancer would be more like replacing the construction crew with out of control robots that constantly pour concrete, never stopping for anything. Only more concrete. Forever.

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