Inulin vs Erythritol: which is worse?
Quick answer: Inulin carries the heavier risk profile. Inulin is allowed in the EU and allowed in the US; Erythritol is allowed in the EU and allowed in the US.
| Property | Inulin | Erythritol |
|---|---|---|
| EU status | Allowed | Allowed |
| US status | Allowed | Allowed |
| Risk level | low | medium |
| Banned in | — | — |
| Restricted in | — | — |
| Category | additive | additive |
| Where it hides | Fiber One Cereals, Activia Yogurt, Clif Bars | Swerve Sweetener, Truvia, Halo Top Ice Cream |
What is Inulin?
Inulin is a naturally occurring prebiotic dietary fiber (fructan polysaccharide) found in chicory root, Jerusalem artichoke, garlic, onions, and bananas. Commercial inulin is extracted primarily from chicory root. It resists digestion in the small intestine and is fermented by beneficial gut bacteria in the colon, promoting growth of Bifidobacterium and Lactobacillus species.
What is Erythritol?
Erythritol is a four-carbon sugar alcohol naturally occurring in small amounts in fruits, fermented foods, and mushrooms. Commercially produced via fermentation of glucose by yeasts such as Moniliella pollinis, it has approximately 70% of sucrose's sweetness, provides 0.24 kcal/g, and has a glycemic index of 0. It is nearly completely absorbed in the small intestine and excreted unchanged in urine, which explains its unusually low laxative effect compared to other polyols.
Documented risks
Inulin: Generally safe and beneficial. At doses above 15–20 g/day, inulin commonly causes bloating, gas, abdominal cramping, and diarrhea due to rapid fermentation in the colon. This is well documented in peer-reviewed research. It is contraindicated for people with fructan intolerance or irritable bowel syndrome following a low-FODMAP diet. At normal food fortification levels (3–8 g/serving), it is tolerated by most adults.
Erythritol: A 2023 observational study published in Nature Medicine (Hazen et al., Cleveland Clinic) found that elevated blood erythritol levels were associated with increased risk of major adverse cardiovascular events (MACE), including heart attack and stroke. Additionally, erythritol was found to enhance platelet aggregation in vitro. This study was widely reported and has generated significant scientific debate; critics note that it was observational (not causational), and that the study population had pre-existing cardiovascular risk factors. Regulatory agencies have not changed their approval status. The long-term cardiovascular implications require further research.
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