And they’re a lot more common than most people think.
I'm not talking about anaphylaxis or immediate allergic reactions that involve an immune response. Those can be serious and life-threatening. If you have any allergies, you need to steer clear of any traces of foods you are allergic to, and speak with your doctor or pharmacist about emergency medication, if necessary.
What I'm talking about, is an intolerance, meaning you do not tolerate a specific food very well and it causes immediate or chronic symptoms anywhere in the body. Symptoms can take hours or even days to show themselves. And symptoms can be located just about anywhere in the body.
This is what makes them so tricky to identify.