Facts About Cancer
Cancers is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts
of the body. Each type of cancer is different according to its biology and pathophysiology.
Human body is made up of trillions of cells, which grow, divide and die in an orderly manner. This process is
regulated and controlled by the DNA within the cell.
In children the normal cell growth and division is rapid and in adults it is normal. Most of the cells grow to
replace the dying cells.
Sometimes the cells of the body grow out of control and become cancerous. The cancer cells continously grow and form
new, abnormal cells. These cells can also invade other tissues.
Cancer cells grow from the normal cells when their DNA or blue prints within the cell nucleus is damaged. DNA is
present in every cell and it cSiontrols the cell’s actions, growth, death, protein synthesis etc. when DNA is
damaged the cell either repairs the damage or the cell dies.
The damaged DNA is not repaired in the cancer cell and the cell does not die. It grows more such abnormal cells with
abnormal DNA. The new cells also have the same defective DNA of the original cancer cell.
DNA damage can be inherited from parents or may be a spontaneous problem. This is called a mutation. DNA damage may
also be triggered by certain environmental toxins like cigarette smoke. There are multiple factors that may cause
cancer and it is difficult to pin point an exact cause.
The signs and symptoms of cancer include a lump, abnormal bleeding, prolonged cough, unexplained weight loss and a
change in bowel movements. For these symptoms there may be other causes also.
100 types of cancers affect humans. Tobacco is the cause of 22 percent of cancer deaths, 10 percent cancer is cause
due to obesity, alcohol, poor diet, lack of physical activity etc,. Sometimes exposure to ionizing radiations and
envorinmental pollution also causes cancer.
Know the disease in early stage for better treatment.