One stressful day doesn’t seem like it will damage your health. But new research suggests stress has a compounding effect. That means what stresses you today may hurt you tomorrow.

Food allergies can cause everything from auto-immune diseases to migraines to rashes to intestinal problems. But, what causes food allergies? And why do people who have never had food allergies suddenly get them?

There aren’t very many things in life that we know will add years to your life. Eating fewer calories is one thing proven to extend your life. Exercise, done properly, can add a few years as well. But that’s about all medicine has been willing to admit will extend your life.