A member asked:

I have a casein allergy, started drinking soy lattes and my stomachaches are back . can they be related ?

A doctor has provided 1 answer
Dr. Francine Yep answered

Specializes in Family Medicine

No: Casein is a milk protein. Soy isn't. But both casein and soy are common food allergies/intolerances. A good rule of thumb: what did your ancestors eat? If your ancestors didn't eat soy once upon a time, then it makes sense that soy may not be agreeing with you now. [also coffee/espresso has caffeine and is acidic, which may also be making your stomach grumpy].

Answered 4/16/2014

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