Foods, chemicals, and other substances can cause disturbing, disabling, or even life threatening symptoms.
Something to consider when trying to determine if you have allergies or sensitivities to foods is whether or not they are organic, conventional, or GMOs. Also, as a couple of recent studies revealed, many foods are chemically contaminated with BPA and phthalates (and probably other chemicals that weren’t tested for), so if a person also has chemical “sensitivities”, getting to the bottom of what is causing any number of symptoms can be challenging, especially with the delayed symptoms that are becoming so common these days.