Is Cancer Hereditary?
When we speak of hereditary cancer specialists should be clarified that relate to the predisposition to disease in the event that the parent suffering from a particular type of tumor. But that does not mean that the person is sentenced to have the condition.
There are many types of cancer, and some of them are clearly linked to environmental factors in lung cancer and smoking, or skin cancer and excessive sun exposure. Others, however, are linked to hereditary issues. In the case of breast cancer, for example, the daughters of women who have suffered are more predisposed to suffer.
It should be noted that cancer is a broad group of diseases characterized by uncontrolled growth of abnormal cells. While normal cells reproduce and grow in an orderly fashion with a purpose-as, for example, closing wounds, cancer cells grow without special reason. They multiply uncontrollably destroying normal tissues and can spread to different parts of the body.
In humans, the most common tumors are the skin, prostate, lung and colon or rectum. In women, skin, breast, colon, rectum, lung and uterus. For both sexes combined, the most common types are lung, colon, rectum and skin.
The importance of the environment
Some cancers are preventable, but not all. Most lung tumors can be prevented by not smoking cigarettes. And the skin can be prevented by avoiding excessive sun exposure or used sunscreen. Also, certain types of tumors caused by occupational or environmental factors can be avoided by eliminating or reducing contact with carcinogenic elements.
Prevention is to prevent anything from happening, while, when talking about early detection, doctors refer to the opportunity to learn in time that something is going to do something about it. If a cancer can be detected before it could move from their place of origin, it is much easier to make successful treatment.
For example, a breast cancer detected early in its home stadium has a survival rate of 91 percent. But this rate drops to 69 percent if detected once it has spread to the lymph nodes under the arm.
In addition, experts identified some specific cases where it has been demonstrated that there is a hereditary factor associated with the disease. Was observed in the case of women who have estrogen therapy in high doses, their daughters developed cancer of the vulva.
It is a relationship frequently seen and well established with studies of large numbers of patients in the United States. These treatments with high doses of estrogen were made in the past, now I leave them aside.
Predictive Genetics
Another inherited disease is called multiple polyposis, which attacks young people and is an early manifestation of colon cancer. This is a very aggressive variety and very difficult to treat.
With regard to prostate cancer, one of the most common in men and is increasing, not established a direct relationship with the heritage. However, in cases where there is family history, doctors recommend periodic inspections start at a younger age, from age 45. This tumor has the advantage that, if detected early, allows control of the disease.
These cases are the best known, however, as they advance in knowledge of the human genome may know more precisely what diseases may be suffering for genetic issues. Thus, it is possible to anticipate several years developing a tumor, especially in families where there is a predisposition to, because what is inherited is a predisposition.
It is anticipated that in the near future genetic studies will establish precisely who almost going to get every type of cancer.
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