The human body is composed of trillions of cells. Each cell in our body has a unique responsibility from giving our body structure, to absorbing food, and converting food to energy. Just as each cell has a unique job, they also have unique left spans. In fact, the average adult male has over 96 million cells die on him every minute. In order to continue on cells must make copies of themselves to basically replace themselves. Sometimes the process of making copies of cells goes haywire. Some cell will continue to grow and grow and not die when they are expected to. Not only that, these cells that are created do not do the jobs they were expected to do, so they serve no purpose. This can grow out of control and create clumps of cells called tumors. Tumors can often attack other healthy cells around them and in affect cause a lot of harm.
Cancer is not a common cold. It is not contagious. Which means you can't catch it by coming in contact with someone who has it. It is not caused directly by bacteria or viruses. Cancer is caused at the genetic level after a series of changes have impacted the genes, cancer carries on. Your chances of getting cancer are based on your family history and the environment around you. If you have a family member that has had cancer, you are more likely to get it in your lifetime. To stay healthier scientists suggest staying away from UV light and not using tobacco or alcohol. The series of worksheets below will help you learn more about cancer.