Food Sensitivity vs. Food Allergy: What You Need to Know

Is a Food Sensitivity the Same as a Food Allergy?

No, and this distinction is important.

A food allergy involves the immune system and can potentially cause a serious or life-threatening reaction. Food intolerance generally does not involve the same allergic mechanism and commonly causes gastrointestinal symptoms such as bloating, abdominal discomfort, or diarrhea. AAAAI

If you believe you have a true food allergy, an appropriate allergy evaluation is important.

What About Food Sensitivity Testing?

This is an area where we want patients to understand the limitations of testing.

There is not currently one blood test that can definitively tell you which foods are causing nonspecific symptoms. In particular, the American Academy of Allergy, Asthma & Immunology recommends against using food-specific IgG testing to diagnose food allergy or food intolerance because the presence of IgG can simply reflect exposure or tolerance to a food. AAAAI

That doesn't mean your symptoms aren't real.

It means symptoms deserve a thoughtful evaluation rather than automatically turning a laboratory report into a lifelong list of foods you cannot eat.

What Symptoms Make People Start Asking About Food?

People commonly start investigating food when they notice:

• Bloating or digestive discomfort

• Changes in bowel habits

• Headaches

• Fatigue

• Skin concerns

• Symptoms that seem to occur after certain foods

The challenge is that these symptoms can have many different causes.

A Positive Result Doesn't Necessarily Mean “Never Eat This Again”

Lab results always need context.

Your medical history, symptoms, eating patterns, medications, and overall health matter.

Unnecessarily eliminating numerous foods can also make eating difficult and potentially affect nutritional adequacy.

The Bigger Picture Matters

If certain foods consistently make you feel poorly, don't ignore what you're experiencing.

But don't assume one test provides the entire answer either.

Our goal is to help patients ask better questions, understand the limitations of testing, and determine when additional evaluation or referral may be appropriate.

Have questions about wellness or laboratory testing? Schedule a consultation with Youthful You Aesthetics + Wellness in Peoria, Arizona.