How does Cancer Affect the Human Body?

Cancer affect the human body through the cells in your body. Normal cells grow, divide, and know when to stop. Cancerous cells on the other hand, keep growing in your body non-stop. They spread throughout your body, and group together forming tumors. These tumors take over your body, killing the normal cells, causing you to become unhealthy and very sick. You can find more information here: .
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