Grove Street Family Clinic

Family Focused for Healthy Living

 To schedule an appointment call 360-653-3500
Open Monday - Friday 9:00am to 6:00pm

Thank you for letting us bring you 14 years of quality health care to Marysville & the surrounding areas!

As the saying goes, “you are what you eat.” What if the foods you are eating are causing symptoms, worsening inflammation, and making you feel worse?


Not be confused with food allergies, food intolerances can affect you without immediately apparent symptoms. However, over time, continual ingestion of a food you are intolerant to can manifest in a host of different ways. You may feel constantly tired, suffer with headaches (or migraines), a recurring skin condition, gradual weight gain, digestive issues etc., any or all of which could be the result of a food intolerance.


Why don’t I already know if I have a food sensitivity?


Food sensitivity symptoms are often delayed, and may present hours later or even the next day after consumption. The other issue is that many of the foods that cause reactions for many people are so commonly consumed (wheat, dairy, eggs) that it is difficult to connect the symptom with a particular food.


How do I know if I have a food sensitivity?


The most difficult and time consuming  way to determine food sensitivities is to do a food elimination diet, whereby you eliminate many common sources of food allergens from your diet for a specified time, and then reintroduce them one by one and wait to see if symptoms develop.  The easiest way to determine your food sensitivities/intolerances is to undergo food sensitivity testing. This is done by testing your blood (through a blood draw) for antibodies.,


What is IgE and IgG testing?


When the immune system recognizes a foreign substance, it produces antibodies to fight off the allergens. IgG and IgE are two different types of antibodies produced in allergic reactions to food. IgE reactions are immediate and usually more severe, such as hives, swelling of the tongue and sudden diarrhea. IgG reactions are more common and more subtle and can result in many other delayed symptoms such as chronic pain, sinusitis, constipation, diarrhea, bloating, gas, fatigue and abdominal pain.


Testing for IgG and IgA food intolerances/sensitivities is confusing for many healthcare providers as they are not typically trained on this type of reaction as it is neither obvious nor life-threatening, however intolerances and sensitivities are gaining public awareness as people are removing offending food groups in order to help support autism/spectrum disorder treatment plans, chronic diseases, and reduce inflammation in the body with success.  Unfortunately though, there is some conflicting evidence on the comparison of IgG versus IgE and the testing behind it.  Keep in mind that they are different ‘branches’ of your immune system and being allergic to a food doesn’t mean you are intolerant and vice versa.


Some negative press and studies have come out recently concluding that IgG intolerance testing has no validity or value.   However, when we and others have reviewed all the research against food intolerance testing, the studies routinely point out that when someone withdraws a particular food based on IgG testing results and that food is then re-introduced, there are no immediate symptoms to cause concern.  However, as we just discussed the nature of IgG and IgA mediated responses is that they are low and slow and may take hours to days to show.  It’s not a rash you can measure, nor a sudden asthma attack you can clearly see.  It might be overall fatigue that slowly worsens, a headache that develops 24 hours later, behavior issues that occur, or several poor night’s sleep.


 The food intolerance/sensitivity test serves as a guideline to help patients determine the top foods to rotate out of the diet in order to ‘clean house’ and get healthier before re-introducing it at a later date.  Typically, when we identify the intolerance, we have a patient stop the food completely for a full four to six weeks (and in some cases much longer) to evaluate what has improved before even considering eating it again.  Some people find the re-introduction brings an immediate return of symptoms and should therefore not be eaten ever while others find an offending food is ‘okay’ at small doses or at infrequent intervals.  There is no ‘black and white’ with intolerance/sensitivity testing which is why we run the test as a good place to start.


If you are interested seeking an alternative approach to your symptoms, getting tested for you and for your family may make sense. Call us to schedule an appointment to help figure your food issues out. Remember, you are what you eat.




• The visit to review your symptoms and order the testing is billable to insurance.  If you don't have insurance, a new patient appointment is $110 plus $10 for the blood draw.


• The test itself is run by an outside laboratory and the cost depends on tests that are completed (IgG only $200 or IgG/IgE $300). The fee is paid directly to clinic at the time of testing.  The testing is NOT covered by insurance companies.


• A follow up visit to review the lab results is required.  If you have insurance, the visit is billable to insurance.  For those patients without insurance the follow up visit is typically $90-135.


Symptoms of food sensitivities may include:


• Fatigue

• Lethargy

• Needing to sleep after you have eaten

• Mood swings

• Depression

• Restlessness

• Headaches

• Migraines

• Joint pain

• Gas or bloating

• Water retention

• Indigestion

• Frequent infections

• Recurrent sinus problems

• Allergies

• Post nasal drip

• And many others



Grove Street Family Clinic

1630 Grove Street

Marysville, WA. 98270


Open Monday - Friday 9:00am to 6:00pm