Ingredient

Carrageenan

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What is Carrageenan?

Carrageenan is a natural polysaccharide derived from red seaweed. It is extracted through boiling the seaweed in an alkaline solution, then filtered and ground into a fine powder.

Carrageenan is widely used as a thickener, gelling agent, and stabilizer in various food products, including dairy and plant-based milks, ice cream, and deli meats. Health research on carrageenan is mixed: some animal studies suggest it could cause digestive inflammation, while many regulatory agencies deem it safe for consumption.

When you see carrageenan on a label, it indicates that the product has been formulated for a smooth texture or stable shelf life. It’s often found in organic and vegan products as a non-synthetic alternative to other thickeners.

Commonly found in: dairy products, plant-based milks, ice cream, processed meats, jellies

What to watch

Some studies suggest carrageenan may induce intestinal inflammation in animal models.

FDA

Carrageenan is approved by the FDA for use in foods and is generally recognized as safe (GRAS).

Research

Research findings are mixed, with some animal studies suggesting potential for inflammation, yet little evidence from human studies.

Vegan

Carrageenan is plant-derived, making it suitable for vegan diets.

Sources: Food Additive Status List · Scientific Opinion on the Re-evaluation of Carrageenan as a Food Additive

Scout's take

Seaweed-derived thickener linked in some studies to gut inflammation.

The case against

May cause gastrointestinal discomfort and inflammation in sensitive individuals.

from the analysis of Fairlife CHOCOLATE 2% REDUCED FAT ULTRA-FILTERED MILK

More from Scout's analyses

Carrageenan is a thickening agent derived from red seaweed, used to improve texture in dairy products. It is highly processed and has been associated with gastrointestinal inflammation. Its use is controversial due to potential health concerns.

from the analysis of Alta Dena Heavy Whipping Cream

Seaweed-derived thickener. Documented gut inflammation and IBD trigger (Tobacman 2001, Borthakur et al. 2007). Concentration is low (<1%) but ingestion through daily toothpaste use is non-trivial over time.

from the analysis of Now Solutions Xyliwhite Refreshmint Toothpaste Gel

Seaweed-derived stabilizer; documented gut inflammation and IBD trigger (Tobacman 2001, Borthakur et al. 2007). Used to keep the cream from separating but not necessary in cleaner formulations.

from the analysis of Starbucks Cold Brew Vanilla Sweet Cream