Tuesday, October 27, 2020

What Is Cancer Disease? Different Types Of Cancer You May Not Know

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Cancer is a disease that begins as a renegade human cell over which the body has lost control. In order for the body and its organs to function properly, cell growth needs to be strictly regulated. this disease cells, however, continue to divide and multiply at their own speed, forming abnormal lumps, or tumors. An estimated 6.7 million people currently die from this disease every year.Not all cancers are natural-born killers. Some tumors are referred to as benignbecause they don’t spread elsewhere in the body. But cells of malignant tumorsdo invade other tissues and will continue to spread if left untreated, often leading to secondary cancers.Cancers can start in almost any body cell, due to damage or defects in genes involved in cell division. Mutations build up over time, which is why people tend to develop this disease later in life. What actually triggers these cell changes remains unclear, but diet, lifestyle, viral infections, exposure to radiation or harmful chemicals, and inherited genes are among factors thought to affect a person’s risk of this disease.

Lung cancer is the world’s most killing this disease. It claims about 1.2 million victims a year. Most of those victims are smokers, who inhale cancer-causing substances called carcinogens with every puff. Experts say around 90 percent of lung cancer cases are due to tobacco smoking.

Breast cancer now accounts for almost one in four cancers diagnosed in women. Studies suggest the genes you inherit can affect the chances of developing the illness. A woman with an affected mother or sister is about twice as likely to develop breast cancer as a woman with no family history of the disease.

Geographical Distinctions

There are also stark geographic differences, with incidence rates varying by as much as thirtyfold between regions. In much of Asia and South and Central America, for example, cervix cancer is the most deadly in females. However, in North America and Europe another kind of gynecological cancer, ovarian cancer, is a more serious threat.Among males, southern and eastern Africa record the second and third highest rates of oesophageal, or gullet, this disease after China, but western and central regions of Africa have the lowest incidence in the world. Differences in diet may explain this.Nevertheless, the reasons why many cancers develop remain elusive. Brain tumor leukemia , and lymphoma (cancer of the lymph glands) are among types that still mystify scientists.

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