It's an observation that we have made for decades... But we have really not been able to explain why that is.
Older lungs... have more scar tissue than younger lungs do, less capable of regeneration, and less resilient to unregulated growth.
Changes to the tissue that come with aging can discourage tumor growth by altering the environment in which cancer cells live.
To learn more about how aging affects tumor growth, researchers studied mice with a cancer-causing mutation, controlled with a genetic switch.
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