the Risk Factors and Causes of Cancers in Young Adults?

risk factor

What Are the Risk Factors and Causes of Cancers in Young Adults?

A risk factor is anything that affects your chance of getting a disease such as cancer. Different cancers have different risk factors.

In older adults, many cancers are linked to lifestyle-related risk factors such as smoking, being overweight, eating an unhealthy diet, not getting enough exercise, and drinking too much alcohol. Exposures to things in the environment, such as radon, air pollution, chemicals in the workplace, or radiation during medical tests or procedures, also play a role in some adult cancers. These types of risk factors usually take many years to influence cancer risk, so they are not thought to play a large role in cancers in children, teens, or young adults.

Cancer occurs as a result of changes (mutations) in the genes inside our cells. Genes, which are made of DNA, contain the instructions for nearly everything our cells do. Some genes control when our cells grow, divide into new cells, and die. Changes in these genes can cause cells to grow out of control.

Some people inherit gene changes from a parent that increase their risk of certain cancers. In people who inherit such a mutation, this can sometimes lead to cancer earlier in life than would normally be expected. Examples include BRCA gene mutations, which increase the risk of breast and some other cancers, and APC gene mutations, which increase the risk of colorectal cancer. But most cancers are not caused by inherited gene changes.

The causes of gene changes in certain adult cancers are sometimes known (such as the lifestyle-related and environmental risk factors mentioned above), but the reasons for gene changes that cause most cancers in children, teens, and young adults are not known. Many are likely to just be random events that sometimes happen inside a cell, without having an outside cause.

Still, there are some known causes of cancer in young adults. For instance:

Still, these and other known risk factors probably account for only a small

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