There are over 200 different types of cancer. Cancer harms the body when altered cells divide to form lumps or tissue called Tumors. Cancer is a group of diseases involving abnormal cell growth which invade and spread to the other parts of the body. Each cancer is different and classified by the type of cell they affect. There are billions of living cells in the body, when cells of the body Start to grow out of control they may become cancerous. Normal cell growth is different from cancer cell growth. Cancer cells continue to grow and form new, abnormal cells instead of dying. In cancer cells, damaged DNA is not repaired, instead it gives rise to abnormal cells with abnormal DNA. DNA damage may also be caused by exposure to some environmental toxins. There are some signs and symptoms of cancer which include abnormal....continue reading @ http://ngcnn..com/2016/11/cancer.html