15. Stomach pain or nausea
Unusual stomach discomfort that lasts more than two weeks can be a warning sign of liver cancer, pancreatic cancer or various digestive system cancers.
16. Unexplained weight loss
In most people, weight goes up and down. But losing weight when you’re not trying or losing your appetite for what seems like no reason can potentially indicate many types of cancers, especially ones that have spread.
17. Unusual lumps
Any new lump or mass that doesn’t go away should be evaluated. Lymph nodes, the small glands in the armpits, groin and neck that produce white blood cells to help fight infection, often become swollen when you have a cold. But if the swelling persists after you’re well, you should contact your doctor.
