Environmental and genetic factors both play key roles in determining a person's risk of developing cancer.
Environmental and genetic factors play crucial roles in determining whether a person gets cancer. While certain mutant genes like BRCA1 and BRCA2 can greatly increase the risk of specific cancers, environmental risk factors such as exposure to carcinogens also significantly contribute to cancer development.
Inherited mutations may be present in all cells and can lead to cancer, while environmental risk factors like UV light, air pollution, and pathogens account for the majority of human cancers. These complex interactions between carcinogens and an individual's genome can explain why some individuals develop cancer after exposure to triggers.
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