Final answer:
Decreasing the risk of cancer involves avoiding carcinogens like UV radiation from tanning beds and consuming a diet high in fiber to prevent colon cancer, among other lifestyle choices.
Step-by-step explanation:
The risk of certain cancers can be decreased through various lifestyle choices and interventions. One effective strategy is avoiding carcinogens, which include tanning beds that expose skin to harmful UV radiation - a known risk factor for skin cancer. Additionally, adopting a diet rich in dietary fiber can lower the risk of colon cancer. Evidence also indicates that restricting caloric intake can reduce tumor growth, which may correspond to a decrease in the risk for certain types of cancer such as melanoma, non-small cell lung cancer, and Hodgkin lymphoma. It is vital to note that these preventive measures are supported by research that emphasizes the reduction of exposure to carcinogens and the promotion of dietary choices that act as anti-carcinogens, potentially leading to lower incidences of cancer.