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Showing posts with the label Symptoms of cancer

What is Cancer?

  Cancer is a term that covers a wide range of diseases that involve abnormal cell growth with the potential to invade or spread to other parts of the body. Unlike normal cells, cancer cells do not respond to the signals that regulate cell division, death and repair. They can also evade the immune system and manipulate the blood vessels to supply them with oxygen and nutrients. Cancer can affect almost any organ or tissue in the human body, and it is one of the leading causes of death worldwide. Types of Cancer There are more than 100 types of cancer, each with different causes, symptoms, treatments and outcomes. Some of the most common types are breast cancer, lung cancer, prostate cancer, colorectal cancer, skin cancer and leukemia. Causes of Cancer Cancer can be caused by various factors, such as exposure to carcinogens (substances that cause cancer), tobacco use, obesity, poor diet, lack of physical activity, excessive alcohol consumption, certain infections, radiation and genetic