When the genetic blueprint or the cells of the DNA undergo changes, it leads to development of cancer. Many times such changes are inherited through parents while in most of the cases, exposure to external environment and surroundings can lead to formation of cancerous cells in the body. Some such environmental factors that can form carcinogens include:
Exposures and substances that ultimately lead to development of cancer are known as carcinogens. The carcinogens can affect the DNA directly or indirectly. For example in rare cases, cells divide very fast than the normal rate due to which the DNA changes quickly promoting the development of cancerous cells.
Each carcinogen has varying capacity to cause cancer. Hence, not all the substances that come under the bracket of carcinogens lead to cancer. Some carcinogens cause cancer after delayed period or only on high exposure. Again the chances of cancer development also depends upon other factors such as ways in which the person is exposed to the carcinogen, intensity and duration of exposure and the genetic makeup and immunity level of the person.
Unlike the popular belief, only unhealthy habits do not cause cancer. Even regular foods, that come under the bracket of healthy food options can contain carcinogenic agents. Use of artificial substances, chemicals and additives to increase the shelf life of the foods and for flavoring can make these foods dangerous for life.
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