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    Scott Adams

    Is DiGiorno Gluten Free Pizza Really Gluten-Free?

    Reviewed and edited by a celiac disease expert.

    There's more than a bit of mystery and confusion about DiGiorno's Gluten Free Pizza. Are they really gluten-free?

    Is DiGiorno Gluten Free Pizza Really Gluten-Free? - Image: Scott Adams
    Caption: Image: Scott Adams

    05/24/2021 - Shortly after DiGiorno released their gluten-free frozen pizza, the controversy began. Many people with celiac disease began to complain that the pizza caused celiac-like symptoms. Some pointed to wheat starch as a potential culprit. DiGiorno's frozen gluten-free pizza is made with "gluten-free" wheat starch. The FDA considers wheat starch to be “an ingredient processed to remove gluten.”

    • DiGiorno Gluten-Free Pizzas contain the following ingredients: Water, Wheat Starch*, low-moisture part-skim mozzarella cheese (cultured part-skim milk, salt, enzymes), tomato paste, Parmesan, Asiago and Romano cheese blend (cultured part-skim cow's milk, salt, enzymes), 2% or less of vegetable oil (soybean oil and/or corn oil), modified rice starch, sugar, salt, psyllium fiber, spices, dried garlic.
      CONTAINS: WHEAT*, MILK.

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      *The wheat starch has been processed to allow this food to meet the Food and Drug Administration (FDA) requirements for gluten-free foods.

    Is DiGiorno's wheat starch gluten-free to FDA standards?

    Foods made with wheat starch may be labeled gluten-free as long as the final food contains below 20 parts per million gluten. Fermented foods and ingredients made with gluten-free wheat starch can be labeled gluten-free.

    So, wheat starch is not a problem by itself. Codex wheat starch, often referred to as “gluten-free wheat starch,” has had the gluten washed out to levels under 20 ppm, and has been considered safe for decades in Europe for people with celiac disease. 

    The Codex quality wheat starch used by Schaer to make Schaer gluten-free croissants is gluten-free to below 5ppm, so high quality gluten-free wheat starch is commercially available.

    Also, wheat starch itself is not considered by FDA to be a fermented or hydrolyzed food. Although, products made with hydrolyzed wheat are subject to a different labeling rule for hydrolyzed foods. Basically, if the wheat starch used by DiGiorno contains hydrolyzed wheat, then it should not be labeled gluten-free.

    Nima Sensor Test Results Indicate DiGiorno May Not Always be Gluten-Free

    To get to the bottom of the problem, we went out and bought a few DiGiorno Gluten Free Four Cheese frozen pizzas at different times so that they came from different batches. We cooked the pizza according to directions, and tested two cooked pizzas using a Nima sensor, which has been shown to be accurate at detecting gluten in products down to 20ppm. 

    For the test, we used only a fresh, spongy piece of crust from the center of a piece of curst, with no other ingredients on it. One of our tests registered positive for gluten, and the other test, which was on a different batch of pizza, tested negative.

    Possibility 1: Some or all of DiGiorno's gluten-free pizzas are not gluten-free. Perhaps DiGiorno is using wheat starch that does not meet Codex gluten-free standards, and some of their wheat starch contains gluten above 20 ppm. That means some of their wheat starch is not gluten-free below 20 ppm, and so the pizzas would reflect that.

    Possibility 2: Our Nima Sensor is wrong and gave a reading in error, and DiGiorno is gluten-free, but according to Nima the sensor is very accurate, and can detect gluten in such products without issues.

    Possibility 3: The wheat starch used by DiGiorno contains hydrolyzed wheat starch, and depending on the testing being done, it is creating misleading test results, for example, When testing starch for residual gluten, test-maker R-Biopharm recommends competitive R5 ELISA, which detects gluten that has been broken apart by processing procedures, such as hydrolysis, rather than sandwich R5 ELISA, which is used to quantify intact gluten protein. However, competitive R5 ELISA also has some limitations. It's doubtful that Nestle would use hydrolyzed wheat starch in this product because it could not legally be labelled gluten-free.

    Actions
    We reached out to DiGiorno to find out if they are using Codex wheat starch in their gluten-free pizza, and if they are regularly testing their ingredients and/or final product to ensure gluten-free status. We have yet to hear back from the company, but will update this article as information becomes available.

    At this time, we don't recommend DiGiorno's "gluten-free" frozen pizzas for people with celiac disease or serious gluten sensitivity. 

     



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    Guest Diana

    Posted

    I have non-celiac gluten sensitivity or a wheat allergy.  My partner brought this home, and I reacted to the dang thing I had it for dinner.

    Yes I should have checked the label but never expected flat-out wheat in a gluten-free product.

    It's gonna be a miserable evening.

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    Guest Celiac Vet

    Posted

    Iam Celiac with D/H and had severe breakout after eating DiGiorno  gluten-free pizza so in my opinion stay away from ingesting said pizza.

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    Guest Laura

    Posted

    Asiago cheese, as with blue cheese, can cause diarrhea in people with celiac disease. I suggest people steer clear of asiago. Rennet is often added to cheeses and is typically not gluten-free. 

    Some celiac patients have multiple immunological intolerances.  E.G. dairy.  The part skim milk in mozzarella and soft cheeses are off limits to me.  Fermented cheeses (120 days + are easily digested). Oddly, the high fat content of cream is well tolerated and used exclusively in my tetrazzini recipes. Extra-creamy butter is also solely purchased.  

    I'm waiting for a buttermilk that is not tainted with low fat milk or carrageen, which also injures the gut lining. 

    I now prepare cauliflower pizza in an air fryer.  Once the water is evaporated & squeezed out of the vegetable, it can be mixed with egg & spices.  Once fried it firms up.  Just add toppings & cook 8 minutes longer and voilà out pops a pizza that can actually be picked up with ones fingers. It's delicious and contains far fewer carbs.

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    trents
    1 hour ago, Guest Laura said:

    Asiago cheese, as with blue cheese, can cause diarrhea in people with celiac disease. I suggest people steer clear of asiago. Rennet is often added to cheeses and is typically not gluten-free. 

    Some celiac patients have multiple immunological intolerances.  E.G. dairy.  The part skim milk in mozzarella and soft cheeses are off limits to me.  Fermented cheeses (120 days + are easily digested). Oddly, the high fat content of cream is well tolerated and used exclusively in my tetrazzini recipes. Extra-creamy butter is also solely purchased.  

    I'm waiting for a buttermilk that is not tainted with low fat milk or carrageen, which also injures the gut lining. 

    I now prepare cauliflower pizza in an air fryer.  Once the water is evaporated & squeezed out of the vegetable, it can be mixed with egg & spices.  Once fried it firms up.  Just add toppings & cook 8 minutes longer and voilà out pops a pizza that can actually be picked up with ones fingers. It's delicious and contains far fewer carbs.

    We're getting more and more folks on the forum who have developed egg intolerance. Egg is part of your recipe so just thought I should mention that.

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    Guest DDD
    1 hour ago, Guest Laura said:

    Asiago cheese, as with blue cheese, can cause diarrhea in people with celiac disease. I suggest people steer clear of asiago. Rennet is often added to cheeses and is typically not gluten-free. 

    Some celiac patients have multiple immunological intolerances.  E.G. dairy.  The part skim milk in mozzarella and soft cheeses are off limits to me.  Fermented cheeses (120 days + are easily digested). Oddly, the high fat content of cream is well tolerated and used exclusively in my tetrazzini recipes. Extra-creamy butter is also solely purchased.  

    I'm waiting for a buttermilk that is not tainted with low fat milk or carrageen, which also injures the gut lining. 

    I now prepare cauliflower pizza in an air fryer.  Once the water is evaporated & squeezed out of the vegetable, it can be mixed with egg & spices.  Once fried it firms up.  Just add toppings & cook 8 minutes longer and voilà out pops a pizza that can actually be picked up with ones fingers. It's delicious and contains far fewer carbs.

    What is your source indicating that rennet is "typically not gluten-free"? Everything I have read indicates it is gluten-free, and would not be the source for contamination. There are plenty of other ways a cheese might contain gluten, so focusing specifically on your rennet comment.

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    Awol cast iron stomach

    Can we just not add wheat starch (even if FDA compliant of 20ppm) to gluten-free foods? That would be great. 

    Sorry to all of you who experienced symptoms who tried it. I appreciate you sharing your experiences.

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    Scott Adams

    Guest Laura, you need to back this comment up, as I've never heard before of rennet as a source of gluten. If this were true it would cause nearly all cheeses to not be gluten-free. There is no known reason to add gluten to cheese, and in fact doing so would likely ruin the cheese.

    Quote

    Rennet is often added to cheeses and is typically not gluten-free. 

     

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    Guest ANTHONY COLATRELLA

    Posted

     an analytical study of the NIMA detector showed it to be TOO SENSITIVE---it does not read out a specific gluten level but just indicates a positive or negative---as it turns out a "POSITIVE" could be as low as 5ppm---in that study a significant percentage of the "positives" were in fact less than 20ppm---hence there is a significant chance of FALSE POSITIVES with the NIMA detector

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    Scott Adams

    The Nima device isn't prone to "false positives" as you claim, but can detect gluten below 20ppm. It will not give a positive result if there is no gluten in a sample, which would be a false positive result. More about this is here:

     

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    Guest Gingermetimbers

    Posted

    I ate this pizza last night, the four cheese. I definitely had a reaction. It tore up my tongue and nausea. It tasted great and for once, I was eating a fluffy pizza - not cardboard. Sadly, I wont try this again. 😔

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    trents

    Kind of a irrelevant discussion in that these sensors and their capsules are no longer being manufactured. So this is relevant only for those who already own the sensors and have a good stockpile of capsules.

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    Guest Omnivore

    Posted

    Just forget DiGiorno and buy Freschetta gluten-free pizza instead. I've been eating it for years now and have never had a reaction. I buy the four-cheese, since I don't react badly to dairy, and add whatever toppings I like.

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    Scott Adams was diagnosed with celiac disease in 1994, and, due to the nearly total lack of information available at that time, was forced to become an expert on the disease in order to recover. In 1995 he launched the site that later became Celiac.com to help as many people as possible with celiac disease get diagnosed so they can begin to live happy, healthy gluten-free lives.  He is co-author of the book Cereal Killers, and founder and publisher of the (formerly paper) newsletter Journal of Gluten Sensitivity. In 1998 he founded The Gluten-Free Mall which he sold in 2014. Celiac.com does not sell any products, and is 100% advertiser supported.


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