Cancer is a disease in which abnormal cells divide uncontrollably and destroy body tissue.
Cancer is caused by accumulated damage to genes. Such changes may be due to chance or exposure to a cancer-causing substance.
The substances that cause cancer are called carcinogens. Carcinogen may be a chemical substance, such as certain molecules in tobacco smoke.
Cancer may occur anywhere in the body. In women, breast cancer is one of the most common cancers. While in men, it’s prostate cancer.
Lung cancer and colorectal cancer affect both men and women.
Cancer starts with changes in one cell or a small group of cells. His is because cells produce signals to control how much and how often the cells divide. If any of these signals are faulty or missing, cells may start to grow and multiply too much and form a lump called a tumor.
Top 5 deadly cancers
- Lung cancer
- Colorectal cancer
- Breast cancer
- Pancreatic cancer
- Prostate cancer
5 warning signs of cancer
- A sore that doesn’t heal or continues to bleed
- A lump or thickening on the skin.
- Unusual bleeding or discharge from any body opening
- A persistent cough or hoarseness
- A persistent change in bowel or bladder habits
Causes of cancers
- Biological or internal factors, such as age, gender, inherited genetic defects and skin type
- Environmental exposure, for instance to radon and UV radiation, and fine particulate matter
- Occupational risk factors, including carcinogens such as many chemicals, radioactive materials, and asbestos.
- Lifestyle-related factors
Although there is no cure for cancer yet, detecting and treating the disease at an early stage can significantly improve a person’s outlook.
Successful treatment may remove all signs of cancer from a person’s body. It is described as remission.
Treatment for cancer may include:
- Surgery
- Chemotherapy
- Radiation therapy
- Bone Marrow transplant
- Immunotherapy
- Hormone therapy
- Targeted drug therapy
- Cryoablation.
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