30 Signs of Deadly Health Conditions Hiding in Plain Sight

When we think of deadly health conditions like cancer and heart disease, it's easy to assume that they are always characterized by obvious symptoms that are impossible to ignore. But the fact is, many signs of serious health conditions hide in plain sight and we tend to chalk them up to stress, aging, or just an inconvenient but harmless health issue.

If you notice unexplained changes in your body, it's always better to be safe than sorry and get yourself checked out. Hopefully there's a simple explanation and solution for those headaches or that fatigue—but if not, going to the doctor as soon as possible could save your life. And for more hints of health problems you should be aware of, check out 40 Subtle Signs Your Body Is Telling You Something's Seriously Wrong.