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LiveScience
LiveScience
Mindy Weisberger

Cancer: Facts about the diseases that cause out-of-control cell growth

A 3d illustration of cancer cells depicted in pink.
Quick facts about cancer

Causes: Genetics, environmental exposures, aging, modifiable lifestyle factors

Types: More than 200

Treatments: Surgery, therapies and medications

There are tens of trillions of cells in the human body, and new cells are constantly forming as older cells age and die. But sometimes, cell growth and replication doesn't stop when it should. These abnormal cells multiply too quickly, harming healthy tissue and interfering with bodily functions. This runaway cell growth and accumulation of abnormal cells is called cancer.

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