Question

Cancer is one of the most dreaded diseases of human beings and is a major cause of death all over the globe. What are the causes of cancer?

Answer 1

Many reasons results in the development of cancer such as excessive smoking or alcohol consumption, harmful radiations etc. There are certain substances called as carcinogens which can develop cancer on contact with the substance. There are certain genetic problems which can cause cancer. Chronic infections of certain viruses may also cause cancer.