What Is Cancer, Really?

Your life depends on teamwork. You probably think of yourself as one creature, but you're actually a collection of trillions of living cells, each with a specific job to do and all working to keep the rest--and hence you--alive.

Cancer cells don't work for the team. In fact, they hurt it. They divide too much, splitting wildly into new cells faster than the normal cells around them. And they don't stop dividing, regardless of the damage they cause. They simply ignore the biological cues that tell your cells when to stop.

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