Cancer refers to any one of a large number of diseases characterized by the development of abnormal cells that divide uncontrollably and have the ability to infiltrate and destroy normal body tissue. Cancer often has the ability to spread throughout your body.
Cancer is the second-leading cause of death in the United States. Nowadays, cancer is the only disease which destroys all the human body; internally and externally. At least the cancer is sufficient disease for the outcomes of our wealth. It includes huge cost in treatment and the result is only about 10 to 20%. But survival rates are improving for many types of cancer, thanks to improvements in cancer screening and cancer treatment.
Signs and symptoms caused by cancer will vary depending on what part of the body is affected. Some general signs and symptoms associated with, but not specific to, cancer, include:
- Lump or area of thickening that can be felt under the skin.
- Weight changes, including unintended loss or gain.
- Skin changes, such as yellowing, darkening or redness of the skin, sores that won’t heal, or changes to existing moles.
- Changes in bowel or bladder habits.
- Persistent cough or trouble breathing.
- Difficulty swallowing.
- Persistent indigestion or discomfort after eating.
- Persistent, unexplained muscle or joint pain.
- Persistent, unexplained fevers or night sweats.
- Unexplained bleeding or bruising.
Cancer is caused by changes (mutations) to the DNA within cells. The DNA inside a cell is packaged into a large number of individual genes, each of which contains a set of instructions telling the cell what functions to perform, as well as how to grow and divide. Errors in the instructions can cause the cell to stop its normal function and may allow a cell to become cancerous.
There’s no certain way to prevent cancer. But doctors have identified several ways of reducing your cancer risk, such as:
1. Stop smoking.
2. Avoid excessive sun exposure.
3. Eat a healthy diet.
4. Exercise most days of the week.
5. Maintain a healthy weight.
6. Drink alcohol in moderation, if you choose to drink.