How Genetic Play a Role in Cancer Risk


Cancer is a serious disease and the second leading cause of death globally. It is estimated that one in nine people develop cancer. Cancer is a genetic disorder in that a change in the DNA code of some genes predisposes to unregulated cell division and cancer.  DNA changes in the cancer cells cannot pass to the children, but if there are genetic changes. in the parent egg or sperm cells that predispose to cancer, these can be passed down from parents to offspring. About 10% of cancers occur because of these inherited DNA genetic changes.

As per the report, India registered around 12 lakh active cases of cancer and around 9.3 lakh deaths in 2019. The Indian rate of cancer is found to be 14,61, 427. This means one in nine people is likely to develop the cancer disease during his/her lifetime. Some of the factors that contribute towards cancer rise are increased alcohol, sedentary lifestyle, smoking, late pregnancy, etc. Multiple mechanisms include inherited genetic mutations, environmental factors and errors in cell division.

Exploring the article will highlight the link between cancer and genetics as well role in the development of cancer risk.

Link Between Genes and Cancer

Our body has billions of cells and each cell has DNA, the instruction manual of the cell. This is present in the 20,000-odd genes in our cells. Genes are responsible for sending instructions to each cell on how to grow, divide, and function. In cancerous cells, this process of controlled cell division and growth is disturbed because of gene mutations alluded to above.

These gene mutations can be acquired due to environmental factors or random cell division errors. Additionally, these can be inherited from the parent germ cells.

Role of Genetics in Cancer Development

Genetic changes can increase the risk of cancer as they alter the working behaviour of cells. All cancer-causing DNA changes occur in the genes, that carry the instruction to make proteins or specialised RNA such as MicroRNA. Scientists stated that there must be changes in more than DNA to turn healthy cells into cancerous cells. However, inherited cancer-related genes also need other additional changes to develop cancer or may never develop changes to increase the risk of cancer.

For more information on the role of genetics in cancer development, book an appointment at Sir Ganga Ram Hospital, where the top medical expert will provide detailed advice on your query. You can also get personalized attention from the best doctors.

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