When most people think of allergies, they think of the classic definition, the hypersensitivity reaction. This type of allergy is the kind that shows up in a blood or scratch test at your local MD allergist's office. The blood test or scratch test reveals the presence of IgE, and in some cases, IgG in the body, and determines, in hard scientific fact, that you do indeed have an allergy.
However, this is a very narrow definition of allergies. In fact, hypersensitivity reactions of this sort are only one of five types, the rest referring to autoimmune disorders. Furthermore, the classic and narrow definition of allergies as hypersensitivity reactions don't always answer our questions as to why things make us sick. I'm sure you know people who have had reactions that look like “allergies,” and yet when they go to the allergist and get tested, the results are negative. Or the results are very specific and don't account for all their symptoms. For example, the test may show an allergy to milk and cats, but nothing else. Yet when they eat nightshade vegetables they get bloated and have indigestion. According to the test they are not allergic to potatoes, peppers, or tomatoes.
What's going on here?
The hypersensitivity definition of allergies, as I said before, is a very narrow definition of an allergy. There is a continuum of allergies. On the “weak” end, we have sensitivities: things we are sensitive to, that cause symptoms such as headaches, insomnia, indigestion, gas, body aches, and diarrhea. Since this is not a hypersensitivity reaction, there are no antibodies to the substance, although inflammation, heat, or other symptoms may occur. In the middle of the spectrum are intolerances, things we naturally avoid because they make us feel uncomfortable enough that we have identified them as an inhospitable guest in our system. Intolerances include things that make us sick: seafood that causes vomiting; grass that causes itching; milk that causes painful bloating and constipation. On the “severe” end of the spectrum we find allergies in the classic definition: things to which our body has produced antibodies after our first exposure, and which produce in us moderately serious reactions (swelling, hives, itching, etc). And at the end of the “severe” end is anaphylaxis. Exposure to these items, which our body has identified as severely dangerous, can produce life-threatening reactions or death. These are your peanut, milk, egg, and wheat anaphylaxes.
Just because your MD doctor has tested you by scratch or blood test and has found that you have a specific number of “allergies,” don't assume that's the end of the story. Pay attention to how you feel—after a big meal, after eating sweets, after consuming alcoholic beverages, after exposure to chemicals. Notice when you feel a certain way after being exposed to something...and notice when these reactions happen REPEATEDLY. Does that morning smoothie leave you feeling exhausted and lightheaded? Do you get really bloated after that afternoon Diet Coke...and then absolutely have to have another one? Do your eyes tear incessantly after taking the Tylenol you popped in order to take care of that headache you got after cleaning your bathtub with Comet? Being in tune with your body and what it can—and can't—handle can help keep you in control of your own life.
However, this is a very narrow definition of allergies. In fact, hypersensitivity reactions of this sort are only one of five types, the rest referring to autoimmune disorders. Furthermore, the classic and narrow definition of allergies as hypersensitivity reactions don't always answer our questions as to why things make us sick. I'm sure you know people who have had reactions that look like “allergies,” and yet when they go to the allergist and get tested, the results are negative. Or the results are very specific and don't account for all their symptoms. For example, the test may show an allergy to milk and cats, but nothing else. Yet when they eat nightshade vegetables they get bloated and have indigestion. According to the test they are not allergic to potatoes, peppers, or tomatoes.
What's going on here?
The hypersensitivity definition of allergies, as I said before, is a very narrow definition of an allergy. There is a continuum of allergies. On the “weak” end, we have sensitivities: things we are sensitive to, that cause symptoms such as headaches, insomnia, indigestion, gas, body aches, and diarrhea. Since this is not a hypersensitivity reaction, there are no antibodies to the substance, although inflammation, heat, or other symptoms may occur. In the middle of the spectrum are intolerances, things we naturally avoid because they make us feel uncomfortable enough that we have identified them as an inhospitable guest in our system. Intolerances include things that make us sick: seafood that causes vomiting; grass that causes itching; milk that causes painful bloating and constipation. On the “severe” end of the spectrum we find allergies in the classic definition: things to which our body has produced antibodies after our first exposure, and which produce in us moderately serious reactions (swelling, hives, itching, etc). And at the end of the “severe” end is anaphylaxis. Exposure to these items, which our body has identified as severely dangerous, can produce life-threatening reactions or death. These are your peanut, milk, egg, and wheat anaphylaxes.
Just because your MD doctor has tested you by scratch or blood test and has found that you have a specific number of “allergies,” don't assume that's the end of the story. Pay attention to how you feel—after a big meal, after eating sweets, after consuming alcoholic beverages, after exposure to chemicals. Notice when you feel a certain way after being exposed to something...and notice when these reactions happen REPEATEDLY. Does that morning smoothie leave you feeling exhausted and lightheaded? Do you get really bloated after that afternoon Diet Coke...and then absolutely have to have another one? Do your eyes tear incessantly after taking the Tylenol you popped in order to take care of that headache you got after cleaning your bathtub with Comet? Being in tune with your body and what it can—and can't—handle can help keep you in control of your own life.
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