The majority of cancers are caused by
A) a sedentary lifestyle.
B) negative thoughts.
C) genetic factors.
D) contact with a person who has cancer.
E) chemical exposure or other environmental factors.

Question

Quizplus · Accepted Answer

Chemical exposure or other environmental factors are a known cause of cancer. These factors can include exposure to carcinogenic substances such as tobacco smoke, chemicals in food and water, and radiation. While genetic factors can play a role in some cancers, the majority of cases are caused by environmental factors. A sedentary lifestyle and negative thoughts may increase the risk of certain types of cancer, but they are not a direct cause. Contact with a person who has cancer cannot cause cancer in another person.

The Majority of Cancers Are Caused by