Additives in food are as ubiquitous as they are nebulous. In our PrimaFoodie Ingredients Spotlight, we investigate common food additives to discover their origin, use, and purpose. Because just because something is edible doesn’t mean it’s healthy—or necessary.

Guar gum is everywhere these days. A staple in various processed goods, from alternative milk to gluten-free goods, this binding agent makes foods thicker. Since it's an additive, however, we wanted to examine it. Here's everything you need to know.

What is Guar Gum?

Often referred to as gellan gum, Guar gum is a galactomannan, a polysaccharide (carbohydrate) found in the cell walls of guar gum beans, which grows on Cyamopsis tetragonolobus plants native to Pakistan and India. Cultivators de-husk and mill the shells of the beans, which then is turned into a powder food additive. Guar gum has high water-absorbing capabilities, making it an effective way to thicken soups, milk, and other foods.

What does Guar Gum do?

The primary purpose of guar gum is to make food thicker and palatable. Because it rapidly absorbs water, guar gum creates a gel-like consistency. Used as an emulsifier, it bolsters the texture of certain foods. These include:

Yogurt
Nut and plant milk
Ice cream
Canned soups
Protein bars
Supplement powders
Vitamins
Gluten-free baked goods

Farmers grow guar gum beans on several continents. While it's used as an emulsifier in personal care and household products, most guar gum is found in foods today. It's also available on its own.

Is Guar Gum Bad?

Research on guar gum and its potential issues is limited. Still, some studies have shown it to interfere with the gut microbiome. Because it absorbs water quickly, research has also shown it interferes with the digestive system. Popular diet pills and appetite-curbing supplements include guar gum because it causes food to swell in the stomach, leading to a feeling of fullness.

Our PrimaFoodie Take

Like any additive, we're hesitant to give guar gum a thumbs up. The fewer additives, the better, in our book. We advise paying attention, reading labels, and seeing how this additive impacts your digestive system.

Further reading: The Primafoodie Ingredient Spotlight on Soy Lec.