Video: Cancers with Hereditary Factors

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Many cancers have a strong genetic component, particularly in certain ethnic groups. While the proportion of people with a family history of cancer is small, the overall number of those who develop cancer due to inherited factors is very large, according to clinical genetics expert Kenneth Offit of Memorial Sloan Kettering Cancer Center. People who have a strong family history of cancer may wish to consider having genetic testing to identify their individual risk.