Why is skin cancer a thing when the skin constantly regenerates itself?

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Surely the new skin growing and the old skin flaking off over time would keep it in good shape?

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Anonymous 0 Comments

The cancerous cells aren’t the already-dead top layer, they’re the deeper layer that’s responsible for replacing them.

More generally, cells that reproduce frequently are *more* susceptible to cancer since they’re already prone to replication errors and high division rates.

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