Pregnancy · Food

Is Carboxymethylcellulose (CMC) Safe During Pregnancy?

The facts: Carboxymethylcellulose (CMC) is not banned worldwide, but some health agencies have flagged concerns. We can't tell you whether it's safe for your pregnancy — that's a conversation for your OB-GYN or midwife. What we can do is show you the regulatory facts and flag Carboxymethylcellulose (CMC) on any product's label so you can decide with your provider. Commonly found in: Turkey Hill Ice Cream, Kraft Salad Dressing, Weight Watchers Frozen Meals.

TL;DR: Carboxymethylcellulose (CMC) is allowed in the EU and allowed in the US. Here's what to know if you're pregnant.

This is not medical advice. Always talk to your OB-GYN or midwife about your diet and products during pregnancy. A restriction in another country is not the same as a proven pregnancy risk — we show you the regulatory facts and the sources so you can have an informed conversation with your provider.
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Carboxymethylcellulose (CMC): regulatory status at a glance

EU statusAllowed
US statusAllowed
Risk level (regulatory)medium
Where it shows upTurkey Hill Ice Cream, Kraft Salad Dressing, Weight Watchers Frozen Meals, Various dairy drinks, Some bread products

What is Carboxymethylcellulose (CMC)?

Carboxymethylcellulose (CMC) is a cellulose derivative produced by reacting cellulose (from wood pulp or cotton) with sodium chloroacetate under alkaline conditions. As cellulose gum, it is highly water-soluble and provides viscosity and stability at low concentrations. It is one of the most widely used food hydrocolloids globally.

Why is Carboxymethylcellulose (CMC) used in food?

Thickens, stabilizes, and improves texture in ice cream, dairy drinks, salad dressings, and gluten-free foods; also prevents staling in baked goods.

What regulators have flagged about Carboxymethylcellulose (CMC)

A 2015 study published in Nature (Chassaing et al., Georgia State University) found that dietary CMC at levels comparable to typical food exposure disrupted the gut microbiome in mice, reducing protective mucus layer thickness, promoting low-grade inflammation, and accelerating colitis and metabolic syndrome in genetically predisposed animals. A 2022 randomized controlled trial (CARGO trial, published in Gastroenterology) in healthy humans confirmed that CMC disruption of gut microbiota composition was observed. EFSA and FDA have not changed approval status, but these findings have generated significant scientific discussion.

For educational use only. This page summarizes the regulatory status of Carboxymethylcellulose (CMC) with citations to the primary sources below. It is not medical advice and is not pregnancy-specific medical guidance. Consult your OB-GYN or midwife for decisions about your pregnancy.

Pregnancy-conscious swaps free from Carboxymethylcellulose (CMC) →

Audited products that don't contain Carboxymethylcellulose (CMC).

Audited CleanClean dye-free
Himalayan Pink Salt Popcorn
Lesser Evil
Zero artificial dyes or preservatives — none of the Red 40 or Yellow 5 found in conventional microwave popcorn. Non-GMO verified.
$4–6/bag
Audited CleanKid-safe
Organic Cheddar Bunnies
Annie's
Free from artificial colors including Red 40 and Yellow 6, which are required to carry warning labels in the EU. USDA Organic certified.
$5–7/box
Audited CleanEU-grade
Original Grain-Free Granola
Simple Mills
No BHA, BHT, or TBHQ preservatives — synthetic antioxidants restricted or banned in Japan and the UK. Made with whole almonds and seeds.
$9–11/bag
Audited CleanClean dye-free
Dark Chocolate Chips
Lily's
Sweetened with stevia instead of high-fructose corn syrup, which is restricted in many EU products. No artificial colors.
$6–8/bag
Audited CleanEU-grade
Chocolate Bark Crackers
Hu Kitchen
No TBHQ, no BHT, no artificial preservatives of any kind. Clean ingredients only — aligns with EU additive standards.
$7–9/box
Audited CleanPregnancy-safe
Simple Squares Almond Honey Bar
Simple Squares
No sodium nitrite, artificial colors, or preservatives of concern. 6 ingredients total — ideal for pregnancy-safe snacking.
$3–4/bar

As an Amazon Associate, BannedPantry earns from qualifying purchases. This never influences our ratings — see Affiliate Disclosure.

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Carboxymethylcellulose (CMC) and pregnancy: common questions

Is Carboxymethylcellulose (CMC) banned anywhere?

Carboxymethylcellulose (CMC) is not currently banned worldwide, though some agencies have flagged concerns. See the sources below.

Should I avoid Carboxymethylcellulose (CMC) during pregnancy?

That's a decision for you and your OB-GYN or midwife — we don't give medical advice. What we can tell you is the regulatory status above. Many people choose to limit additives during pregnancy out of caution; bring this page and its sources to your next appointment.

What foods contain Carboxymethylcellulose (CMC)?

Commonly found in Turkey Hill Ice Cream, Kraft Salad Dressing, Weight Watchers Frozen Meals, Various dairy drinks, Some bread products. Scan any product's barcode to check its label for Carboxymethylcellulose (CMC).

What can I use instead of Carboxymethylcellulose (CMC)?

Guar gum, xanthan gum, locust bean gum, and psyllium provide thickening with less documented microbiome disruption. See the pregnancy-conscious swaps below.

Pregnant and not sure what's in your cart?

Scan any product's barcode and instantly see if it contains Carboxymethylcellulose (CMC) or other ingredients restricted overseas.

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Other ingredients to check during pregnancy

Sources

  1. Dietary emulsifiers impact the mouse gut microbiota promoting colitis and metabolic syndrome — Nature / PubMed
  2. Carboxymethylcellulose dietary supplementation in healthy humans — CARGO trial — Gastroenterology / PubMed

Our scores are never influenced by brands. Last updated 6/11/2026.

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