Tuesday, December 28, 2010

Cancer

Cancer is a disease that has as a renegade human cells, loss of control begins. proper operation of the body and its organs properly, cell growth must be strictly regulated. Cancer cells divide and multiply, however, continue at your own pace, the growth of abnormal lumps or tumors. It is estimated that 6.7 million people die from cancer every year at this time.

Not all cancers Natural Born Killers. Some tumors are called benign because they do not spread to other parts of the body. But do not penetrate into the cells of malignant tumors, other tissues and will continue to spread if left untreated, often lead to secondary cancer.

Cancer can begin in almost every cell in the body to be involved and because of damage or defects in the genes of cell division. a mutation in a long time, so that people are prone to cancer later in life. That actually solves these cellular changes remains unclear, but diet, lifestyle, viral infections, exposure to radiation or harmful chemicals and genes of hereditary factors that influence the risk of developing cancer of human thought.

Lung cancer kills cancer in the world. She claims some 1.2 million people a year. Most of these victims of smokers, cancer-causing substances called carcinogens inhaled with every train. Experts say that about 90 percent of lung cancers linked to smoking.

Now, almost one in four breast cancer diagnosed cancer in women. Studies show that inherit genes may influence the risk of developing the disease. The woman with the victim's mother or sister is about twice as likely to develop breast cancer than women without a family history of disease. Lifestyle can also have an influence, especially in Western countries, where many women and children later. Women who give birth to the first up to the age of 30, is believed to be three times higher risk of breast cancer than those who are teenage mothers.

Geographic award

There is also a stark geographical differences, with varying frequency as much as thirty times between regions. In many parts of Asia, Central and South America, for example, cervical cancer is the most dangerous in women. But in North America and Europe, various types of gynecologic cancer, ovarian cancer is a serious threat.

Among men, the southern and eastern Africa, recording the second and third largest of the esophagus and esophageal cancer in China, but the western and central African regions have the lowest in the world. Differences in diet can explain.

Nevertheless, the reasons why many cancers develop unexplained. Brain cancer, leukemia (blood cancer) and lymphoma (cancer of the lymph glands) are a species that continues to mislead scientists.

Treatment

But more and more people survive due to early diagnosis, better screening and better treatment. Three main treatment options include surgery, radiation and chemotherapy. Radiation therapy, also called radiotherapy of tumors include high-energy radiation of X-rays to reduce and destroy cancer cells. Chemotherapy uses cancer-killing drugs.

Nevertheless, the future of cancer cases is projected to rise as the world's population is becoming older. The proportion of people older than 60 years, more than twice the year 2050 is expected to increase from 10 percent to 22 percent. This will add an estimated 4.7 million before his death from cancer in 2030.