Over half of all Americans are living with a food allergy. Are you one of them?Elisabeth Hassleback and Dr. Oz explain how food allergies affect the body and why they are so hard to recognize.

View Part 2 of Elisabeth Hasselbeck’s Hidden Food Allergy.

Watch Elisabeth Hasselbeck reveal the top four hidden food allergies.

Could you have a hidden food allergy? Take this self-test.

After years of trying to get pregnant, doctors told Kelsi Pierce it would be near impossible for her to conceive a child. However, Kelsi got the surprise of her life when her mom volunteered to be her surrogate — and she found out she, too, was pregnant!