Food Intelligence · Sweetener

Maple Syrup Glycemic Index and Calculate Your Own Glucose Response

Across 6,995 logged meals containing maple syrup from 2,674 Signos members, the average glucose peak was +37.9 mg/dL — higher than plain sugar in our data because nearly every member who logs maple syrup is also logging pancakes, waffles, or French toast underneath. On pancakes the peak averages +41 mg/dL (n=418); on French toast it climbs to +47 (n=345) — the syrup pile compounds on top of the carb-bomb vehicle.

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

● Powered by Signos cohort dataHigh confidence · n=6,995
The swap calculator below draws on 6,995 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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Meal Context
Pre-meal sequence
Activity after meal
Time of day
50
of 100
Signos Glucose Score
High Spike Risk
75% of members fall between +30 and +44 mg/dL
Predicted Curve · 3-hr window
1401001201401601800m30m60m90m120m150m180m+37
Peak
+37
mg/dL
Time in Range
100%
3hr window
Above 140
0m
danger zone
Swaps
0
applied
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● Key Findings · Does maple syrup spike blood sugar?

Yes — meaningfully. Across 6,995 logged meals containing maple syrup from 2,674 Signos members, the average glucose peak was +37.9 mg/dL. Across 6,995 logged meals containing maple syrup, the mean glucose peak was +37.9 mg/dL and the median +35 — moderate-to-high territory, and notably above the +31.6 mg/dL we measured for plain sugar across its 43,229-log cohort. The reason isn't the maple molecule: it's the vehicle. Maple syrup essentially never gets logged alone (the single-item sub-cohort is just 38 logs) — nearly every member logs it on pancakes, waffles, French toast, or oatmeal, where the breakfast-carb base does most of the work. Three levers drive the variance: vehicle (French toast lifts the peak +11 mg/dL above plain), total meal carb load (very-heavy meals at +48.7 mg/dL, a 59% escalation), and protein pairing (≥15g protein trims ~7%). The IQR spans 28 mg/dL (p25: +17, p75: +45).

  • Across 6,995 logged meals containing maple syrup from 2,674 members, the mean was +37.9 mg/dL with a median of +35 — 58.9% of logs cleared the +30 mg/dL threshold.
  • French toast is the highest-spike vehicle: +46.9 mg/dL across 345 matched logs versus +35.9 plain — a +11 mg/dL delta, the largest positive vehicle effect measured.
  • In coffee or latte runs essentially neutral at +37.3 mg/dL (n=1,031, only +1 above plain) — when the vehicle carries no carbs of its own, the response is just the dose.
  • Sugar-free maple syrup trims the peak by −8 mg/dL versus pure Grade A (27.8 vs 36.0 mg/dL, n=165 matched logs) — a meaningful form swap when the vehicle is fixed.
● Signos Rules

Three citable insights from this recipe's data

Rule 1
"The French-Toast Penalty"
+11 mg/dL on French toast
Maple syrup on French toast averages +46.9 mg/dL across 345 matched logs versus +35.9 mg/dL plain — a +11 mg/dL delta, the largest positive vehicle effect measured. The mechanism stacks: French toast is sourdough soaked in egg-and-milk, fried in butter, then drowned in syrup. Pancakes and waffles run a few mg/dL lower (+5–6 above plain) but still well above coffee or in-oatmeal vehicles. The vehicle compounds on top of the syrup's own GL of 12.
Rule 2
"The Carb-Load Penalty"
+59% peak escalation
When maple syrup appears in meals carrying 110g+ of total carbs, the response jumps to +48.7 mg/dL — a 59% escalation versus the light-carb baseline (+30.7 mg/dL, n=2,693). High-carb meals (≥60g total) ran ~46% above the low-carb cohort across 2,355 matched logs (CI: +12.89 to +15.09 mg/dL, p<0.001). The syrup isn't the headline driver; the pancake stack is.
Rule 3
"The Sugar-Free Discount"
−8 mg/dL vs pure
Sugar-free maple syrup (Walden Farms / Lakanto type) averaged +27.8 mg/dL across 165 matched logs versus +36.0 mg/dL for pure Grade A maple syrup (n=3,764) — a −8 mg/dL delta from the form swap (medium confidence). When the vehicle (pancakes, waffles) is held constant, removing the syrup's own glucose load trims the curve by about a quarter. Not zero — but the largest form-side lever in the dataset.
● Curious about your own?

Curious how your body responds to maple syrup specifically?

Across 6,995 logged meals containing maple syrup from 2,674 members, the IQR spans 28 mg/dL — from +17 mg/dL at the 25th percentile to +45 at the 75th. That's a wide range for a 2-tablespoon pour. Your response depends on the vehicle (pancakes, waffles, French toast, coffee), the surrounding meal carbs, and your baseline glucose at the time of eating. A CGM makes that variability visible in real time.

Learn how Signos works
Why this meal spikes

This meal stacks 3 independent spike drivers — together they account for +36 mg/dL.

Driver 1
Pure maple sugar (~26g carb per 2 tbsp)
+36 mg/dL
A 2-tablespoon serving of pure Grade A maple syrup carries ~26g of sucrose-equivalent — mostly sucrose with a small fructose fraction. Plain maple syrup averages +35.9 mg/dL across 3,770 logs; GI 61 / GL 12 plays out exactly as the textbook predicts.
Driver 2
Carb-bomb vehicles (pancakes, waffles, French toast)
+11 mg/dL
Maple syrup lives almost entirely on breakfast carbs. French toast adds +11 mg/dL above plain syrup (n=345); waffles +6 (n=585); pancakes +5 (n=418). The flour underneath carries 30–50g of carbs of its own.
Driver 3
Total meal carb load (≥60g at the same sitting)
+14 mg/dL
When total meal carbs hit ≥60g, peaks rose ~46% above the low-carb baseline (n=2,355, p<0.001, CI: +12.89 to +15.09 mg/dL). Very-heavy meals (110g+ carbs) hit +48.7 mg/dL — a 59% escalation.
● Which bucket are you in?

Some members spike +30.7 mg/dL. Others spike +48.7. The only way to know how you'll spike is to measure with a Signos CGM.

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What surprised us
What surprised us about maple syrup is how rarely it gets logged on its own. Across 6,995 logged meals containing maple syrup, the single-item sub-cohort was just 38 logs — essentially zero. Nearly every member logs the syrup alongside pancakes, waffles, French toast, or oatmeal, so the cohort response is really a syrup-plus-breakfast-carb response. The mean of +37.9 mg/dL isn't a maple problem; it's a stack problem. On French toast the peak climbs to +47; in plain coffee it lands at +37 — only +1 above plain syrup. The vehicle is the story.
Signos Data Science Team

Why this happens, physiologically

Maple syrup produces a mean peak of +37.9 mg/dL across 6,995 logged meals from 2,674 members — moderate-to-high territory, with an IQR of 28 mg/dL (p25: +17, p75: +45). Because the single-item sub-cohort is too small to characterize (n=38), this page treats the broader cohort as primary — every measurement here reflects the syrup-plus-vehicle reality of how members actually consume it. Three levers explain most of the range. First, the vehicle: on French toast the peak averages +46.9 mg/dL across 345 matched logs while in coffee or latte it lands at +37.3 (n=1,031) — a +10 mg/dL gap. Second, total meal carb load: very-heavy meals (110g+ carbs) hit +48.7 mg/dL while light-carb meals averaged +30.7 — a 59% escalation across 4 carb buckets. Third, the form itself: sugar-free maple swaps trim peaks by −8 mg/dL versus pure Grade A. These effects are observational from matched-pair Welch's t-tests, not controlled trials.

● Three mechanisms drive maple syrup's range

Vehicle, total carb load, and form swaps together explain the gap between maple syrup's lowest- and highest-spike contexts in the cohort

  1. Mechanism 1
    +11 mg/dL
    French-toast vehicle bump
    Vehicle is the single biggest lever. Maple syrup on French toast averaged +46.9 mg/dL (n=345); plain syrup anchored at +35.9 (n=3,770). The +11 mg/dL gap traces to the bread-and-egg-and-butter stack underneath.
  2. Mechanism 2
    +59%
    Carb-load escalation
    Total meal carb load is the second-biggest lever. Light-carb meals (0–40g) averaged +30.7 mg/dL while very-heavy meals (110g+, n=526) hit +48.7 — a 59% escalation. The syrup isn't the headline driver; the stack is.
  3. Mechanism 3
    −8 mg/dL
    Sugar-free form swap
    Swapping pure Grade A for sugar-free maple syrup trimmed the peak from +36.0 to +27.8 mg/dL across 165 matched logs (medium confidence). The vehicle underneath still drives most of the response — but removing the syrup's own glucose load makes a measurable dent.
● Fit Check
Maple syrup lands in the moderate-to-high spike zone for most members — the vehicle (especially French toast) and total meal carb load shift the outcome more than light vs dark maple grade.
This is for you if
  • You use maple syrup in coffee or a latte. The in-coffee-or-latte vehicle averages +37.3 mg/dL across 1,031 matched logs — only +1 above plain syrup.
  • You swap pure Grade A for sugar-free maple syrup. Sugar-free averages +27.8 mg/dL across 165 logs (option mean 27.8 vs default 36.0) — a −8 mg/dL delta from the form swap.
  • You keep total meal carbs light (0–40g). Light-carb meals averaged +30.7 mg/dL across 2,693 logs — versus +48.7 mg/dL when total carbs exceed 110g.
  • You pair maple syrup with ≥15g of protein. Across 4,490 matched logs, protein pairings ran ~7% lower than the no-protein baseline (CI: −4.0 to −1.6 mg/dL).
Not for you if
  • You pour maple syrup on French toast. The on-French-toast vehicle averages +46.9 mg/dL across 345 logs — a +11 mg/dL delta above plain, the highest-spike vehicle measured.
  • You eat maple syrup as part of a high-carb pancake-stack breakfast (≥60g total carbs). That load lifts the response ~46% — a +12.89 to +15.09 mg/dL increase across 2,355 matched logs (p<0.001).
  • You eat maple syrup at a lunch-sized meal. Lunch logs averaged +39.2 mg/dL across 1,152 meals — about 4 mg/dL above breakfast (+38.7, n=4,280).
  • You consume maple syrup alongside ≥20g of other sugar. The high-sugar modifier raises the peak ~38% — a CI of +9.98 to +12.75 mg/dL across 3,922 matched logs.
● How it fits your day

Calorie band and pairings (member-measured)

Per serving
403–496 kcal
Maple-syrup meals averaged 403 kcal in the small single-item slice (n=103) and 496 kcal in the broader multi-item cohort (n=6,892) — reflecting that maple syrup almost always rides a pancake / waffle / French-toast stack.
Pair before
  • Pick the coffee or oatmeal vehicle over pancakes / waffles / French toast: +37 vs +47 mg/dL (n=1,031 vs 345) — the largest single move you can make.
  • Add a protein buffer (≥15g): drops the peak ~7% across 4,490 matched logs (CI: −4.0 to −1.6 mg/dL).
Pair after
  • A 20-min walk within 30 min of eating blunts carb-driven peaks — especially relevant given the +49 mg/dL average in the very-heavy carb bucket.
  • Avoid stacking high-carb sides post-maple: meals with ≥60g total carbs spiked ~46% higher than the low-carb baseline (n=2,355).
Avoid pairing
  • Maple syrup on French toast: the on-French-toast vehicle averaged +46.9 mg/dL vs +35.9 plain — the bread-egg-butter stack compounds with the syrup.
  • Pure Grade A on a pancake stack: the combination averaged +41.4 mg/dL (n=418); swapping to sugar-free maple trims the form side by −8 mg/dL.
● 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 maple syrup compares to other sweeteners and the breakfast vehicles it almost always rides

Frequently Asked Questions

Methodology

This page is grounded in 6,995 total logged meals containing maple syrup from approximately 2,674 unique Signos members, captured through the Signos production PPGR cohort. Because the single-item maple syrup sub-cohort returned only 38 logs — too small to characterize at confidence — we treat the broader cohort (which includes maple syrup paired with pancakes, waffles, French toast, oatmeal, coffee, and other vehicles) as the page primary. Data was filtered to meals with a measured glucose rise between 0 and 100 mg/dL (ppgr_case='regular') to exclude outliers and sensor artifacts. Statistical comparisons between modifier groups use Welch's t-test on matched pairs; all effects reported at p<0.05 minimum, with the dominant modifiers reaching p<0.001. We report the mean peak glucose rise of +37.9 mg/dL across the right-skewed distribution — the median is a few mg/dL lower at +35, which is typical for this data shape. The IQR spans 28 mg/dL (p25: +17, p75: +45). Maple syrup logs were identified via a regex cohort match on the canonical food names 'maple syrup' and 'pure maple', with explicit compound-term exclusions: 'maple bacon' (the bacon is the headline) and 'maple leaf' (decorative / brand term) are dropped. A minimum of 100 matched meals was required for any vehicle option to appear at high confidence.

Limitations

  • Single-item maple syrup sub-cohort is too small to characterize (n=38) — every reported peak reflects maple syrup as it's actually eaten (with pancakes / waffles / French toast / oatmeal / coffee).
  • Self-reported portion sizes introduce measurement error — '2 tablespoons of maple syrup' logged by one member may differ meaningfully from the pour another logs.
  • Cohort skews health-motivated; Signos members are actively monitoring glucose, so general-population responses — particularly among people with greater insulin resistance — may differ.
  • The sugar-free maple syrup sub-cohort is medium confidence (n=165 matched logs); the −8 mg/dL delta is directionally consistent but should be interpreted with caution.
  • The on-French-toast and on-pancakes sub-cohorts are medium confidence (n=345 and n=418); deltas are reported but pancake / French-toast users skew toward weekend breakfast contexts that may differ structurally from weekday logs.
  • All findings are observational, not causal — confounders such as concurrent medications, activity levels, and sleep quality are not controlled for in the modifier analysis.
● Get your own data

See your own maple syrup response

Across 6,995 logged meals containing maple syrup from 2,674 members, the average glucose peak was +37.9 mg/dL — but the IQR spans 28 mg/dL (p25: +17, p75: +45). That's not noise; it's biology. Your vehicle, your carb load at the meal, even the form (pure vs sugar-free) all shift the outcome measurably. Maple syrup in coffee anchors at +37 mg/dL in our matched-pair data; maple on French toast climbs to +47. Only a CGM tells you which end of that range you live on.

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