Explain why it would be incorrect to classify cancer as a disease caused by environmental factors.3 marks

1. Multifactorial Etiology: Cancer is not solely caused by environmental factors. It is a multifactorial disease, meaning it is caused by a combination of genetic, environmental, and lifestyle factors. While environmental factors such as exposure to certain chemicals, radiation, and certain viruses can increase the risk of developing cancer, they are not the sole cause.

2. Genetic Factors: Genetic factors play a significant role in the development of cancer. Certain mutations in genes can predispose individuals to developing specific types of cancer. These mutations can be inherited from parents or can occur spontaneously.

3. Lifestyle Factors: Lifestyle factors such as diet, physical activity, and tobacco and alcohol use also contribute to the risk of developing cancer. For example, a diet high in processed and red meats has been linked to an increased risk of certain types of cancer, while physical activity can help to reduce the risk of developing certain types of cancer.

Therefore, it would be incorrect to classify cancer as a disease caused solely by environmental factors. It is a complex disease that is caused by a combination of genetic, environmental, and lifestyle factors.