If such trends continue, close to one out of every two people in the United States will eventually develop some form of the disease and cancer will be the most common cause of death. To put it another way, in a country of roughly million people we are expecting more than million new cancer cases!
Cancer is one of the most important non-infectious or non-communicable diseases. Out of them two lakhs of people die.
It is mainly due to late detection. Many people are not aware of the early symptoms of this disease. The growth of multicellular animals occurs due to addition of new cells.
The old or existing cells divide by mitosis to form new cells. This division is controlled and regulated by some factors. Sometimes, due to unknown reasons, some cells divide in abnormally faster rate to form a lump. This lump increases rapidly causing ulcers.
It causes serious complications in the body. These abnormal cells first destroy the organ and then the whole body. These cells utilize the total food of the body. So the affected person becomes weak, looses his weight and ultimately dies. The tumors, enclosed in connective tissue are called benign tumor and when the tumors grow, it is called as malignant.
Cancer can be divided into different types: The cancer which occurs in muscles, cartilages, bones, blood vessels, connective tissues are known as sarcoma. This type of cancer originates from skin or cells which lines the internal organs.
It is the cancer of lymph glands and lymph nodes. It occurs in blood forming organs, specially the bone marrow. It is found that no organ of body and no species is free from cancer. The real cause of cancer is not yet known.
The following aspects can be attributed to the cause of cancer: Excessive smoking has been found to be associated with lung cancer, cancer in urinary bladder, mouth, throat, larynx etc.
Chewing of tobacco, betel nuts etc. A large number of dyes, chemicals, heavy metals can cause cancer. Ionic radiations like X-ray, gamma ray etc. Alcohol is thought to be the cause of cancer in stomach, liver, gall bladder etc. Pollutants like chemicals, smoke, dust may be responsible for cancer.
Though the exact cause of cancer is not known, the above described substances are mutagens which can cause mutation in genes. The mutant genes have no control over normal functioning of the cell. So it may lead to cancer. Though cancer can develop at any part or organ of the body, it mostly develops in some organs like liver, alimentary canal, larynx, pharynx, tongue, lips, gall bladder, lungs, uterus, urinary bladder, lymph nodes, bones etc.
Primary Symptoms of Cancer: Presence of any persistent lump or thickening of tissues in lip, tongue or breast. Any wound that does not heal. Unusual bleeding or discharge of blood. Persistent indigestion, difficulty in swallowing. A regular change in bowel movements.
Rapid change in rate of growth, colour and form of mole or wart. Change in the voice. Unusual loss of weight of the body.The high incidence of colorectal cancer (CRC), one of the most common malignant tumors, ranks third among all cancer types .
The 5-year and year survival rates for patients diagnosed with colorectal cancer are 65% and respectively 58%. Free Essay: Cancer: The Costs, Causes, and Cures Cancer is a major killer of people all around the globe. We do not have a definite cure, but the amount of.
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Cancer spreads inside the body rapidly and infects other organs, called metastasis: (i) Cancer cells grow through the walls of blood vessels.
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