When cells begin to grow uncontrollably cancer occurs in the body loses. While there are many forms of cancer, one must begin uncontrolled growth of abnormal cells.
Normal body cells grow and divide, and die with dignity. In front of people, life is a normal human cell divide faster. Then the cells divide in many parts of the body is worn out or dying cells, rather than repair injuries.
Because cancer cells grow and divide, is different than usual. Instead of dying normal cells survive and continue to form new abnormal cells.
Cancer cells develop because of damage to DNA. Located in each cell and controls all activities of this section. Many times, when DNA damage, the body cannot fix. Cancer cells, DNA repair. They have the DNA is damaged, it is possible account of hereditary cancer. Often, however, that one is in such an environment, like smoking radiation damage to DNA.
Cancer usually forms as a tumor. Some cancers, like leukemia, tumors. Instead of blood cancer – cells to organs and spread to other tissues, where it occurs.
Generally, cancer cells start growing where they are and replace normal tissue and travel to other parts of the body. This process is called metastasis. The cancer spread, but only regardless of where in the country. For example, breast cancer, breast cancer, but spread to the liver, not liver cancer.
All malignant tumors. Good (cancerous) tumors can spread (metastases) in other parts of the body and a very rare exception, not death.
Some cancers can behave very differently. For example, lung cancer and breast cancer are very different diseases. They grow at different rates and respond to different treatments. So people who suffer from cancer, cancer that must be done in a certain format should be.
Second, is the leading cause of cancer death in America? Half of all men and one third of all American women will develop cancer in their lives. Today, millions of people who suffer from cancer. Smoking, the risk of most types of cancer, lifestyle and dietary changes to reduce a person. He found against cancer and starting treatment, more likely to live for many years.