uncontrolled growth of cells in the body of invading adjacent tissues and organs is known as cancer. It is frightening progressive disease that, if undetected, or if left untreated can metastasize (spread to other places in the body through the lymph or blood) and can cause death. Cancer is one of the most common cause of death of people each year. It affects people of all ages, but research shows that aging increases the risk for most cancers. In most cancers, doctors can not tell the exact cause of cancer, but after knowing the risk factors that can cause cancer, can take simple measures to prevent cancer. Before looking at ways to prevent cancer, let us look at the known causes and risk factors for cancer.
the development of cancer: Causes and risk factors
There are several known causes of cancer. Hormonal imbalance due to excessive stress, dysfunction of the immune system, exposure to radon gas, which is the source of ionizing radiation, excessive exposure to ultraviolet radiation from the sun, wrong diet, obesity, lack of exercise, physical inactivity, some occupational and chemical exposures can cause cancer. Genetic factors such as errors in DNA replication, mutation, inherited abnormalities in the genetic material capable of promoting genetic changes in cells and that they become cancerous. Infections caused by some viruses can lead to cancer. For example, human papilloma virus (HPV) can cause cervical cancer, Helicobacter pylori can cause stomach cancer, hepatitis B and hepatitis C can cause liver cancer. Similarly, contact with carcinogens, such as tobacco smoke, radiation, certain harmful chemicals, or infectious substances can lead to cancer cell growth. For example, smoking can cause lung cancer, alcohol can promote liver cancer.
ways to prevent cancer
All of the above ways to prevent cancer can not be scientifically proven, but there is no harm in following them, when some studies show that they reduce the risk of cancer. According to World Health Organization (WHO), about 15 million cases of cancer diagnosed in 2020. This indicates a 50% increase in cancer cases, which is pretty amazing. Statistics show that tobacco is the main culprit that is responsible for 33% (one in three) of all cancer deaths in the developed world, and about 20% (one out of five) in the world. Many cancers are treated when detected in early stages. Routine check-up indirectly prevent cancer. So, never delay the doctor's appointment and do not hesitate to go for routine check-up.
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