Answer ( 1 )

  1. Genetic factors can contribute to the development of cancer.

    A person’s genetic code tells their cells when to divide and expire. Changes in the genes can lead to faulty instructions, and cancer can result.

    Genes also influence the cells’ production of proteins, and proteins carry many of the instructions for cellular growth and division.

    Some genes change proteins that would usually repair damaged cells. This can lead to cancer. If a parent has these genes, they may pass on the altered instructions to their offspring.

    Some genetic changes occur after birth, and factors such as smoking and sun exposure can increase the risk.

    Other changes that can result in cancer take place in the chemical signals that determine how the body deploys, or “expresses” specific genes.

    Finally, a person can inherit a predisposition for a type of cancer. A doctor may refer to this as having a hereditary cancer syndrome. Inherited genetic mutations significantly contribute to the development of 5–10 percent of cancer cases.

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