No matter what the problem is, even a small disease is capable of bringing grief to a happy family. Cancer, just after hearing this word we get so tensed and the person suffering from this automatically gets depressed and generally loses all hope. There are very few people who are strong enough to handle this period of hardships and the ones who can do it with ultimate coverage can win this battle against their strengths. It tests their mental strength at every stage.
The diseases are characterized by the development of a large number of abnormal cells that divide uncontrollably and can infiltrate and destroy normal body tissue.
Cancer is caused by changes to DNA within cells. The DNA is packed inside a cell and contains a large number of individual genes. Errors in construction cause the cell to stop functioning and allow to cell to become cancerous.

CAUSES:
1. Family – If any one of your family members had cancer then mutations may get passed from one generation to another. But it is also not a surety that cancer is always inherited.
2. Health Condition – if you are suffering from some chronic diseases, say for example, ulcerative colitis, it can increase your risk of getting cancer.
3. Habits – If you are getting extreme exposure to sunlight, you are obese, are having unsafe sex, have blistering sunburns, or have a habit of smoking and drinking, then you are most prone to suffering from cancer.
4. Environment – Even if you are not smoking, the place you are putting up in has polluted gases in its air, some people smoke at your place, then their habits can indirectly lead you to get into the trap of cancer.
5. Age – Growing age is an incline towards cancer. If you do not take care of your health with your age, then there are increased chances of getting cancer.