People who can’t eat gluten know two things. First they know that bread causes the problem. And second, they know there’s no cure for celiac disease.

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?