Here's Why You're Always Sleepy After You Eat

4/6 Previous Next

© Getty Images

Food Allergies or Intolerance

Sometimes, you might feel sleepy after eating due to an undiagnosed food allergy or intolerance. For example, those with celiac disease or gluten sensitivity may feel lethargic after consuming gluten-containing foods. An elimination diet can help determine whether an allergy or intolerance is the root of your post-meal fatigue, but you should first consult your doctor.