What is Celiac Disease?

Celiac disease is an autoimmune disease triggered by gluten.

Gluten is found in wheat, barley, and rye. When someone with celiac disease consumes gluten, their immune system reacts and can damage the small intestine.

Celiac disease is lifelong, and currently the main treatment is following a strict gluten-free diet.

Want the full explanation? → Check out the original Gluten Free Guide

Gluten vs. Wheat

Gluten ≠ wheat.

Wheat is one source of gluten, but gluten can also come from barley and rye.

That's why a product being “wheat-free” does not automatically mean it is gluten-free.

What Is Cross-Contact?

Cross-contact happens when gluten accidentally gets onto food that would otherwise be gluten-free.

Examples include:

• Sharing a toaster with regular bread

• Using a cutting board that has had gluten-containing foods on it

• Getting crumbs into shared butter or spreads

• Using a shared fryer

• Sharing utensils

• Preparing gluten-free food on a surface that hasn't been properly cleaned

You can't always see cross-contact.

For someone with celiac disease, preventing cross-contact is an important part of eating safely.

What Does “Gluten-Free” Mean?

In the United States, the FDA's gluten-free labeling rule allows foods labeled “gluten-free” to contain less than 20 parts per million (ppm) of gluten.

A gluten-free label can make shopping easier, but it's still important to check the package you're buying because ingredients and labeling can change.

Remember:

Wheat-free ≠ gluten-free

Gluten-free ≠ automatically healthy

No obvious symptoms ≠ no reaction

Quick Label-Reading Guide

When you're shopping, look at:

1. The gluten-free label

Look for a gluten-free claim on the package.

2. The ingredients

Check for ingredients containing wheat, barley, or rye.

3. The allergen statement

In the U.S., wheat is one of the major food allergens that must be declared when present.

4. The whole package

Always check the actual package you're buying because formulations and labels can change.

Not sure about a product? → Check out our Food Guide

Celiac Myth vs. Fact

“A little gluten is okay.”

FACT: People with celiac disease need to avoid gluten, including accidental exposure from cross-contact.

“If I don't feel sick, nothing happened.”

FACT: Some people have few or no noticeable symptoms, so symptoms aren't a reliable way to determine whether exposure occurred.

“Wheat-free means gluten-free.”

FACT: Gluten can also come from barley and rye.

“Gluten-free means healthy.”

FACT: Gluten-free describes gluten content, not how nutritious a food is.

“I can just pick the gluten off.”

FACT: If gluten has contacted a food, you can't necessarily make it safe simply by removing the visible portion.

 Celiac & Restaurants

Eating out with celiac disease is possible, but communication and cross-contact precautions matter.

Before ordering, consider asking:

“Is this gluten-free?”

“How do you prevent cross-contact?”

“Is it prepared separately from foods containing gluten?”

“Does the fryer/grill/toaster also come into contact with gluten?”

Every restaurant is different, so don't assume that something is safe simply because it appears gluten-free.

→ Explore our Restaurant Guide

Quick FAQ

Are rice and potatoes naturally gluten-free?

Yes, plain rice and potatoes are naturally gluten-free. However, ingredients added during preparation or cross-contact can make them unsafe.

Can people with celiac disease eat oats?

Oats require extra consideration because they can be exposed to gluten during processing. Talk with your healthcare professional about whether oats are appropriate for you and look for products with appropriate gluten-free labeling.

Can people with celiac disease eat at restaurants?

Yes. However, restaurants vary in their ability to prevent gluten cross-contact. Always communicate your needs and ask about preparation.

Can celiac disease go away?

No. Celiac disease is a lifelong condition. Following a strict gluten-free diet helps manage it.