● Food Intelligence · Sweetener

Erythritol Glycemic Index and Calculate Your Own Glucose Response

Across 1,198 logged erythritol meals — the smallest sweetener cohort but the lowest mean — members averaged +20.0 mg/dL with a glycemic index of 0. Granular erythritol anchors at +20 mg/dL in the cohort (n=454); the recipe-builder form is zeroed because GI is 0. One nuance worth knowing: a 2023 Nature Medicine paper reported an association between serum erythritol levels and cardiovascular events — observational, not causal, but flagged.

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Reviewed by Grace Shryack
Signos Proprietary Data·Updated May 20, 2026·10 min read

● Powered by Signos cohort dataHigh confidence · n=1,198
The swap calculator below draws on 1,198 matched-pair logs — a broader cohort than the page's single-item primary, used to give every ingredient swap statistical power. Welch's t-test on matched pairs, not third-party glycemic-index tables. Each swap shows its sample size and confidence tier inline.
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Tap any ingredient below to swap it for a glucose-friendlier alternative. Your Signos Glucose Score, predicted curve, and nutrition update in real-time. Every swap is data-backed by real CGM response measurements.

Ingredients — Tap to Swap
Meal Context
Pre-meal sequence
Activity after meal
Time of day
11
of 100
Signos Glucose Score
Low Spike Risk
75% of members fall between +7 and +9 mg/dL
Predicted Curve · 3-hr window
1401001201401601800m30m60m90m120m150m180m+8
Peak
+8
mg/dL
Time in Range
100%
3hr window
Above 140
0m
danger zone
Swaps
0
applied
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● Key Findings · Does erythritol spike blood sugar?

No — erythritol alone is glycemically inert (GI=0, absorbed but largely excreted unchanged). The +20.0 mg/dL cohort average across 1,198 logs is the lowest in the sweetener tranche. Erythritol is a sugar alcohol that the small intestine absorbs but the body excretes mostly unchanged in urine, which is why the published glycemic index is 0 and every form anchor in our recipe builder is set to 0. The cohort mean of +20.0 mg/dL — the lowest in our sweetener tranche — exists because members log erythritol in coffee, in keto baking, on yogurt; the rest of the meal is what shows up on the trace. The vehicle deltas confirm it: erythritol in coffee tracked +20.1 mg/dL vs the +20.3 alone baseline (n=582), and keto-baked-good logs averaged +18.6 mg/dL (−2 mg/dL delta, n=101). One nuance worth knowing about: a 2023 Nature Medicine paper (Witkowski et al.) reported an association between elevated serum erythritol levels and major adverse cardiovascular events — observational, not yet established as causal, but flagged. The glucose data here is clean; the cardiovascular link is a separate question still under active research.

  • ▸Erythritol-in-coffee logs averaged +20.1 mg/dL across 582 matched meals — essentially identical to the +20.3 mg/dL alone baseline, confirming the GI=0 published value.
  • ▸Granular erythritol (n=454) and Swerve blend (n=217 full-cohort) both anchor at 0 mg/dL in the recipe builder because published GI is 0 — the cohort means of +20.2 and +19.8 reflect what members ate alongside each form.
  • ▸Keto-baking logs containing erythritol averaged +18.6 mg/dL across 101 logs — a −2 mg/dL delta vs the alone baseline, lower than either coffee or granular contexts.
  • ▸Total meal carb load drives the cohort spike: heavy-carb meals (70–110g) averaged +28.5 mg/dL versus +18.3 mg/dL in the light-carb bucket — a 56% escalation across 982 light-carb and 33 heavy-carb logs.
● Signos Rules

Three citable insights from this recipe's data

Rule 1
"The GI-Zero Rule"
0 mg/dL across all forms
Erythritol's published glycemic index is 0, and the recipe-builder form anchors are zeroed accordingly. Granular (n=454) and Swerve blend (n=217 full-cohort) both read 0 mg/dL alone. The underlying cohort means (+20.2 for granular, +19.8 for Swerve) are nearly identical and reflect the meal context — coffee, keto baking — not the sweetener. Erythritol is absorbed but largely excreted unchanged, which is why it carries 0 GI and 0.24 kcal/g.
Rule 2
"The Coffee-Vehicle Flat"
−0.2 mg/dL vs alone
Erythritol in coffee tracked +20.1 mg/dL across 582 matched logs versus the +20.3 mg/dL alone baseline — effectively flat. That's about as clean a vehicle confirmation as the cohort produces, and it's the largest pairing slot in the erythritol dataset by far. Coffee itself moves glucose minimally; pairing it with a zero-GI sweetener leaves the curve unchanged.
Rule 3
"The 2023 Asterisk"
Observational, not causal
A 2023 Nature Medicine paper (Witkowski et al.) reported an association between elevated serum erythritol and major adverse cardiovascular events — including stroke and heart attack — over a 3-year follow-up. The mechanism proposed was enhanced platelet reactivity. The study was observational; endogenous erythritol production from glucose may confound the result, and the FDA's GRAS designation has not changed. Worth knowing while the science develops — not a clear directive.
● Curious about your own?

Curious how your body responds to erythritol specifically?

Erythritol has a published glycemic index of 0, and the cohort confirms it: across 1,198 logs the mean peak was +20.0 mg/dL — the lowest in our sweetener tranche — and in-coffee logs tracked flat against the alone baseline. But the meal around the erythritol can still move the curve, and individual responses vary. A CGM tells you which builds work for your biology.

Learn how Signos works
Why this meal spikes

This meal stacks 3 independent spike drivers — together they account for +0 mg/dL.

Driver 1
High sugar load (≥20g) in the surrounding meal
+11 mg/dL
High-sugar pairings (≥20g) lifted peaks 64% (CI: +8.38 to +14.56 mg/dL, n=108 vs n=874, p<0.001) — the largest single modifier in the erythritol dataset. Erythritol contributes no sugar to the meal; this signal is members logging the sweetener alongside fruit, honey, or sweetened foods.
Driver 2
Total meal carb load (≥60g) with erythritol present
+10 mg/dL
Meals tagged with erythritol and ≥60g total carbs ran 56% higher than the lower-carb baseline (CI: +5.78 to +14.6 mg/dL, n=73 vs n=982, p<0.001). The carbs are doing the work — erythritol itself contributes essentially zero metabolizable carbohydrate.
Driver 3
High fiber (≥5g) in the surrounding meal
+3 mg/dL
High-fiber pairings (≥5g) lifted peaks 16% (CI: +1.19 to +4.74 mg/dL, n=463 vs n=525) — counterintuitive on the surface, but reflects calorie-denser meal contexts where erythritol was logged alongside oats, berries, or chia. The fiber tracks with food, not with a fiber-causes-spike mechanism.
● Which bucket are you in?

Some members spike +17.8 mg/dL. Others spike +28.5. The only way to know how you'll spike is to measure with a Signos CGM.

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● What's worth knowing
What's worth knowing about erythritol is that the glucose data is unusually clean — across 1,198 logs the cohort mean was +20.0 mg/dL, the lowest in our sweetener tranche, and erythritol in coffee tracked flat against the alone baseline. The recipe-builder form anchors are all set to 0, exactly as the GI=0 label predicts. The one asterisk worth flagging: a 2023 Nature Medicine paper reported an association between serum erythritol levels and cardiovascular event risk. It's observational, not yet causal — but the data team thinks it's worth surfacing rather than burying.
— Signos Data Science Team

Why this happens, physiologically

Erythritol produces a cohort-mean peak of +20.0 mg/dL across 1,198 logs from 311 members — the lowest mean of any sweetener we've measured. The sugar alcohol is absorbed in the small intestine but excreted largely unchanged in urine, so it contributes no metabolizable carbohydrate. The published glycemic index is 0, and every form anchor in our recipe builder is zeroed accordingly. The cohort signal reflects meal context: in matched-pair vehicle data, erythritol in coffee tracked +20.1 mg/dL versus the +20.3 alone baseline (n=582 vs n=544) — flat. Keto-baking logs averaged +18.6 mg/dL (n=101), a −2 mg/dL delta. One observation worth flagging alongside the glucose data: a 2023 Nature Medicine paper (Witkowski et al.) reported an association between elevated serum erythritol and cardiovascular events. The study was observational, and endogenous erythritol production from glucose may confound the link, but the finding is under active research and the FDA's GRAS designation has not changed.

● Three mechanisms explain erythritol's near-zero impact

Unabsorbed excretion, flat vehicle deltas, and carb-load escalation each shape what shows up on the trace

  1. Mechanism 1
    GI = 0
    Excreted unchanged
    Erythritol is a sugar alcohol the small intestine absorbs but the body excretes mostly unchanged in urine — it contributes essentially no metabolizable carbohydrate. That's why the published GI is 0, why it carries only 0.24 kcal/g, and why every form anchor in our recipe builder is set to 0.
  2. Mechanism 2
    −0.2 mg/dL
    Vehicle stays flat
    In matched-pair vehicle data, erythritol in coffee averaged +20.1 mg/dL versus +20.3 mg/dL alone (n=582 vs n=544) — effectively flat. Keto-baking logs tracked −2 mg/dL. The vehicle isn't moving the curve any more than erythritol is.
  3. Mechanism 3
    +56%
    Carb-load escalation
    Where the cohort signal climbs is on total meal carb load. Heavy-carb meals (70–110g) averaged +28.5 mg/dL versus +18.3 mg/dL in the light-carb bucket (n=33 vs n=982) — a 56% escalation. The high-carb modifier (≥60g) lifted peaks ~56% (CI: +5.78 to +14.6 mg/dL, p<0.001). The surrounding starch drives this.
● Fit Check
Erythritol is the cleanest sweetener in the cohort for glucose — with one cardiovascular asterisk worth knowing about.
✓ This is for you if
  • ▸You sweeten coffee with erythritol or Swerve. In-coffee logs averaged +20.1 mg/dL across 582 matched meals — flat against the +20.3 alone baseline.
  • ▸You bake keto cookies, muffins, or cake. Keto-baking logs averaged +18.6 mg/dL across 101 logs — a −2 mg/dL delta vs the alone baseline.
  • ▸You want the lowest-GI sweetener available. Erythritol's cohort mean (+20.0) is the lowest in our sweetener tranche, and the published GI is 0.
  • ▸You prefer a sweetener with FDA GRAS status. Erythritol is recognized as Generally Recognized as Safe; the FDA designation has not changed despite the 2023 cardiovascular paper.
✗ Not for you if
  • ▸You have a known cardiovascular risk profile and want to be cautious about the 2023 finding. The Witkowski et al. paper in Nature Medicine reported an observational association between serum erythritol and adverse cardiovascular events — not causal, but worth discussing with your clinician.
  • ▸You're sensitive to sugar-alcohol GI discomfort. Erythritol is generally better tolerated than other polyols, but high doses (above ~50g) can still cause bloating or laxative effects in some people.
  • ▸You eat erythritol-sweetened items alongside a high-sugar meal (≥20g sugar). The high-sugar modifier raised peaks 64% — the largest in the erythritol dataset (CI: +8.38 to +14.56 mg/dL, n=108).
  • ▸You expect a 1:1 sweetness swap with sugar. Erythritol is ~70% as sweet as sucrose and can produce a cooling tongue sensation at high concentrations — Swerve blends in oligosaccharides to mask both issues.
● How it fits your day

Calorie band and pairings (member-measured)

Per serving
66–743 kcal
Single-item erythritol logs averaged 66 kcal across the cohort; multi-item meals containing erythritol ran 281 kcal on average. The heavy-carb bucket (70–110g) averaged 743 kcal — the meal carries the calories, not the sweetener.
● Pair before
  • ▸Sweeten coffee or tea with erythritol/Swerve: in-coffee logs averaged +20.1 mg/dL (n=582), essentially flat to the +20.3 alone baseline.
  • ▸If you're baking, keto-baking logs containing erythritol averaged +18.6 mg/dL (n=101) — a −2 mg/dL delta over the alone baseline.
● Pair after
  • ▸A 15–20 min walk within 30 min helps when erythritol appears in heavy-carb meals (70–110g): those averaged +28.5 mg/dL vs +18.3 in the light-carb bucket.
  • ▸Morning erythritol logs (before 10am) ran ~6% lower than later-day meals (CI: −3.08 to +0.77 mg/dL, n=610 vs n=395) — earlier insulin sensitivity helps even with a zero-GI sweetener.
● Avoid pairing
  • ▸Avoid stacking erythritol-sweetened items with high-sugar foods: the high-sugar modifier (≥20g) lifted peaks 64% (CI: +8.38 to +14.56 mg/dL, n=108).
  • ▸Avoid pairing erythritol-sweetened drinks with heavy-carb meals (≥60g): the high-carb modifier lifted peaks ~56% (CI: +5.78 to +14.6 mg/dL, n=73).
● Quick definitions (click to expand)
mg/dL — milligrams per deciliter. The unit blood glucose is measured in. A rise of "+30 mg/dL above baseline" means blood sugar went up 30 units after the meal.
Glycemic Index (GI) — a 0–100 score for how fast a food raises blood sugar in lab tests. Under 55 = low, 56–69 = medium, 70+ = high.
Glycemic Load (GL) — GI adjusted for portion size. Under 10 = low, 10–19 = medium, 20+ = high.
CGM — Continuous Glucose Monitor. A wearable sensor that tracks blood glucose every few minutes. Signos members wear CGMs while eating meals they log.
● Related Foods: How erythritol compares to other sweeteners and low-carb baking ingredients
Honey Glycemic Index & Glucose Score
Honey reads GI 61 — a real moderate-sugar curve, in contrast to erythritol's GI=0 baseline. See how the natural-sweetener framing compares to the data.
Coffee Glycemic Index & Glucose Score
Erythritol in coffee tracked flat against the alone baseline — coffee itself is the cleanest vehicle measured. See the standalone coffee curve.
Greek Yogurt Glycemic Index & Glucose Score
Greek yogurt is a common vehicle for sweeteners in the cohort — protein and fat matrix that holds the curve down regardless of which sweetener you reach for.
Dark Chocolate Glycemic Index & Glucose Score
Dark chocolate is a common partner for erythritol in keto baking. See how cocoa-and-fat reads when the sugar is replaced.
Track Your Erythritol Response with Signos →
See how your glucose actually moves when erythritol is in coffee vs. in keto baked goods vs. in a Swerve blend — CGM data, personalized to you.

Frequently Asked Questions

Methodology

This page draws on 1,198 logged erythritol meals from 311 unique Signos members, captured through the Signos production CGM platform between Mar 2025 and Apr 2026. Data were filtered to postprandial glucose responses (PPGR) between 0 and 100 mg/dL to exclude sensor artifacts. Modifier effects were estimated using Welch's t-test on matched pairs against a defined baseline; reported effects carry p<0.05 minimum, with the dominant modifiers reaching p<0.001. Because erythritol has a published glycemic index of 0 and glycemic load of 0, the recipe-builder form anchors are overridden to 0 mg/dL — the underlying cohort means (preserved in `option_mean_full_cohort`) reflect what members ate alongside each form, not the erythritol itself. Erythritol logs were identified by a regex matching the bare term "erythritol" or the brand name "Swerve"; members logging "Lakanto" or other brand variants are partially captured under multi-ingredient meal tags. A minimum of 30 matched meals was required for any sub-cohort to appear in the modifier table. We surface the 2023 Witkowski et al. Nature Medicine paper as editorial context — that study is independent of our cohort and outside the scope of our glucose analysis.

Limitations

  • Self-reported portion sizes introduce measurement error — a logged "1 tsp of erythritol" may vary meaningfully in actual quantity, especially when measured into baked-good recipes.
  • The cohort is smaller than other sweeteners (n=1,198) because members often log Swerve or Lakanto by brand rather than "erythritol" by name — the granular erythritol form sub-cohort (n=454) carries medium confidence.
  • Cohort skews health-motivated; Signos members actively tracking glucose and using erythritol tend to follow keto or low-carb patterns that aren't representative of the general population.
  • The keto-baking sub-cohort (n=101) and Swerve sub-cohort (n=89 single-item) carry medium-to-low confidence and should be read as directional rather than precise estimates.
  • Cohort means appear non-zero (e.g. granular +20.2 mg/dL) because members log meal context — "logged: erythritol; ate: erythritol in coffee with a keto muffin." The published GI=0 is the editorially correct anchor.
  • Modifier analyses reflect meal-level correlations, not controlled feeding trials — causality cannot be established from observational CGM data alone, and the 2023 Witkowski et al. cardiovascular association is similarly observational and outside the glucose scope of this analysis.
● Get your own data

See your own erythritol response

Erythritol alone is glycemically inert (GI=0), and the cohort confirms it across 1,198 logs: in-coffee tracked flat to the alone baseline, keto-baking ran −2 mg/dL below it. The cohort mean of +20.0 mg/dL is the lowest in our sweetener tranche. Where the curve climbs is meal context — heavy-carb meals averaged +28.5 mg/dL vs +18.3 in the light-carb bucket. Your personal response depends on what's on the plate, your insulin sensitivity, and time of day. A CGM shows you exactly where each build lands.

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