0:00:06.667,0:00:13.227
Cancer is a group of over 100 diseases[br]characterized by abnormal, uncontrolled cell growth.

0:00:14.505,0:00:20.587
In a healthy body, cells grow, die, and are replaced[br]in a very controlled way.

0:00:20.587,0:00:26.637
Damage or change in the genetic material of cells[br]by environmental or internal factors

0:00:26.637,0:00:32.651
sometimes results in cells that do not die[br]and continue to multiply until a mass of cancer cells

0:00:32.651,0:00:40.760
or a tumor develops.[br]Most cancer related deaths are due to metastasis:[br]

0:00:40.760,0:00:47.210
malignant cells that penetrate into the circulatory system[br]and establish colonies in other parts of the body.

0:00:47.210,0:00:52.709
Great advancements have been made,[br]but cancer is still the leading cause of death

0:00:52.709,0:00:59.157
for people under the age of 85.[br]In the United States, one in every four people

0:00:59.157,0:01:01.032
die from cancer.