EVERYDAY SCIENCE

Detailed explanation-1: -lung (1.80 million deaths); colon and rectum (916 000 deaths);

Detailed explanation-2: -Lung and bronchus cancer is responsible for the most deaths with 130, 180 people expected to die from this disease. That is nearly three times the 52, 580 deaths due to colorectal cancer, which is the second most common cause of cancer death. Pancreatic cancer is the third deadliest cancer, causing 49, 830 deaths.

Detailed explanation-3: -SCLC is the most aggressive form of lung cancer. It usually starts in the breathing tubes (bronchi) in the center of the chest. Although the cancer cells are small, they grow very quickly and create large tumors.

Detailed explanation-4: -Cigarette smoking is the leading risk factor for lung cancer. According to the CDC, 80 to 90 percent of all lung cancer deaths can be attributed to tobacco usage4. But not all cases are caused by smoking. Exposure to secondhand smoke, for example, contributes to more than 7, 000 lung cancer deaths each year⁵.

Detailed explanation-5: -Lung cancer is the leading cancer killer in both men and women in the U.S. In 1987, it surpassed breast cancer to become the leading cause of cancer deaths in women.