Symptoms like stomach pain and bloating can be early signs of certain cancers that are on the rise in people under age 40.SDI Productions/Getty Images Exhaustion. Fever. Unexplained aches and pains.

Exhaustion. Fever. Unexplained aches and pains. Bloating. As colorectal cancer and breast cancer are on the rise in people under 40, if you're experiencing symptoms, you shouldn't put off that ...