● Food Intelligence · Grain

White Rice Glycemic Index and Calculate Your Own Glucose Response

Across 792 logged meals where white rice was eaten alone — from 572 Signos members — the average glucose peak was +49.8 mg/dL, the highest single-food average measured in the Atlas. Pairings move the needle: rice with grilled chicken averaged +41.4 mg/dL versus +47.3 with no protein — a −6 mg/dL discount in matched logs.

GS
Reviewed by Grace Shryack
Signos Proprietary Data·Updated April 30, 2026·10 min read

● Powered by Signos cohort dataHigh confidence · n=792
The swap calculator below draws on 30,829 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.

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Meal Context
Pre-meal sequence
Activity after meal
Time of day
62
of 100
Signos Glucose Score
High Spike Risk
75% of members fall between +38 and +54 mg/dL
Predicted Curve · 3-hr window
1401001201401601800m30m60m90m120m150m180m+46
Peak
+46
mg/dL
Time in Range
89%
3hr window
Above 140
20m
danger zone
Swaps
0
applied
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● Key Findings · Does white rice spike blood sugar?

Yes — across 792 logged meals where white rice was eaten alone, the average glucose peak was +49.8 mg/dL. Across 792 single-item white rice logs from 572 Signos members, the mean glucose peak was +49.8 mg/dL — the highest single-food average measured in the Atlas, with 80.2% of those logs exceeding the +30 mg/dL spike threshold and an IQR spanning 32 mg/dL (p25: +34, p75: +66). Three levers explain most of the variance once white rice enters a mixed meal: total meal carb load (the dominant factor, +23.6% when the meal hits ≥60g carbs), the variety itself (basmati runs −2.3 mg/dL below plain, sticky rice runs +4.8 above), and the protein paired with it (chicken or salmon trim −6 mg/dL each). Individual response varies as much as the food itself.

  • ▸White rice averages +49.8 mg/dL across 792 single-item logs — the highest single-food average measured in the Atlas, with 80.2% of logs exceeding the +30 mg/dL spike threshold.
  • ▸Total carb load is the biggest lever: meals with ≥60g carbs spiked 23.6% higher than the low-carb baseline (n=14,218 matched logs, p<0.001, CI [+8.64, +9.85] mg/dL).
  • ▸Pairing white rice with grilled chicken drops the peak by −6 mg/dL (treatment mean 41.4 vs. 47.3 baseline, n=3,717), with salmon delivering an identical −6 mg/dL discount across 1,957 paired logs.
  • ▸Switching from plain white rice to basmati cuts the average peak from 45.4 to 43.1 mg/dL across 4,555 basmati logs — a −2.3 mg/dL discount before any pairing decisions.
● Signos Rules

Three citable insights from this recipe's data

Rule 1
"The Protein-Plate Discount"
−6 mg/dL peak
Pairing white rice with grilled chicken (n=3,717) or salmon (n=1,957) trims the average peak by 6 mg/dL — from 47.3 to 41.4 and 40.9 mg/dL respectively. That's the largest matched-pair pairing discount on this page. The mechanism: dietary protein slows gastric emptying and triggers an early insulin response that blunts the rice spike. Tofu and shrimp showed no measurable effect at this cohort size — the effect appears tied to total protein quantity, not source.
Rule 2
"The Carb-Stack Penalty"
+23.6% peak
When white rice appears in a meal carrying ≥60g of total carbs, the glucose response runs 23.6% higher than the low-carb baseline — a CI of [+8.64, +9.85] mg/dL across 14,218 high-carb logs (p<0.001). The rice itself is fast-digest starch; piling another carb (tortilla, beans, dessert) on top compounds the load. Light meals (0–40g carbs) averaged +39.2 mg/dL, while very heavy meals (110g+) hit +51.5 mg/dL — a 31% escalation.
Rule 3
"The Basmati Edge"
−2.3 mg/dL vs plain
Across 4,555 basmati logs, the average peak landed at 43.1 mg/dL versus 45.4 mg/dL for plain white rice (n=19,726). That −2.3 mg/dL difference is small but real, and matches basmati's lower published GI versus standard white rice. Sticky/glutinous rice (n=639) ran the opposite direction at +50.2 mg/dL — the highest variety in the cohort. Jasmine landed indistinguishable from plain white (+44.9, n=5,526).
● Curious about your own?

Curious how your body responds to white rice specifically?

Across 1,349 logged meals where white rice was eaten alone, the IQR spans 32 mg/dL — from +33 mg/dL at the 25th percentile to +65 mg/dL at the 75th. That's a wide range for a single food. Your response depends on factors like meal carb load, protein pairing, and the rice variety itself. 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 +45 mg/dL.

Driver 1
Fast-digest starch (~45g per cup cooked)
+45 mg/dL
A cup of cooked white rice carries roughly 45g of refined starch that hydrolyzes rapidly into glucose. This is the dominant driver of the +45 mg/dL anchor across 19,726 plain-rice logs.
Driver 2
Total meal carb load (≥60g at the same sitting)
+9 mg/dL
When total meal carbs hit ≥60g, peak rises 23.6% above the low-carb baseline (n=14,218, p<0.001, CI [+8.64, +9.85] mg/dL). Very heavy meals (110g+ carbs) push the average peak to +51.5 mg/dL — a 31% escalation vs. light-carb meals.
Driver 3
Form processing (fried, sticky, sushi roll)
+14 mg/dL
Fried rice averaged +59.0 mg/dL vs. +45.0 plain (n=50, low confidence), and sticky/glutinous rice ran +50.2 mg/dL (n=639). Higher amylopectin content and added refined-carb context drive the gap.
● Which bucket are you in?

Some members spike +39.2 mg/dL. Others spike +51.5. 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 white rice is how little the rice variety changes things versus how much the protein pairing does. Switching from plain white to basmati only saves −2.3 mg/dL, and jasmine is statistically indistinguishable from plain at +44.9 vs +45.4 across 5,526 logs. But adding grilled chicken or salmon trims the peak by −6 mg/dL — nearly 3× the variety effect. The takeaway: don't overthink which rice; think about what's on the plate next to it.
— Signos Data Science Team

Why this happens, physiologically

White rice produces a mean peak of +49.8 mg/dL across 792 logged meals where white rice was eaten alone — the highest single-food average measured in the Atlas, with a wide IQR of 32 mg/dL (p25: +34, p75: +66). Three levers explain most of that range once white rice enters a mixed meal. First, total meal carb load dominates: meals in the very heavy carb bucket (110g+) spiked +51.5 mg/dL on average — 31% more than the lightest-carb meals (+39.2 mg/dL). Second, the form of the rice matters: fried rice averaged +59.0 mg/dL (n=50, low confidence) and sticky rice +50.2 (n=639), versus +45.0 for plain steamed. Third, protein pairings offer measurable counter-pressure — grilled chicken trimmed the mean from 47.3 to 41.4 mg/dL across 3,717 paired logs. These effects are observational from matched-pair Welch's t-tests, not controlled trials.

● Three mechanisms drive white rice's glucose range

Carb load, rice form, and protein pairings together explain the 31% escalation seen in the cohort

  1. Mechanism 1
    +31%
    Carb-load escalation
    Total meal carb load is the dominant lever. Light-carb meals (0–40g) averaged +39.2 mg/dL across 7,045 logs; very heavy meals (110g+) averaged +51.5 mg/dL across 3,099 logs — a 31% escalation.
  2. Mechanism 2
    +14 mg/dL
    Fried-rice penalty
    Fried rice averaged +59.0 mg/dL versus +45.0 for plain steamed across 50 fried-rice logs (low confidence). Added refined oil, repeated heating, and starch retrogradation effects compound on top of the rice's baseline starch load.
  3. Mechanism 3
    −6 mg/dL
    Protein-pairing buffer
    Grilled chicken dropped the mean peak from 47.3 to 41.4 mg/dL across 3,717 logs; salmon delivered the same −6 mg/dL across 1,957. Protein slows gastric emptying and triggers an early insulin response, blunting glucose entry.
● Fit Check
White rice lands in the high-spike zone for most members — what you pair it with matters far more than which variety you choose.
✓ This is for you if
  • ▸You pair rice with grilled chicken or salmon. Either swap drops the mean peak from 47.3 to 41.4 mg/dL (chicken, n=3,717) or 40.9 mg/dL (salmon, n=1,957) — the largest pairing discount on this page.
  • ▸You add 1/4 avocado to the bowl. Avocado pairings averaged +39.2 mg/dL versus +45.5 mg/dL with no added fat (n=1,504), a −6 mg/dL discount that matches protein for size.
  • ▸You keep total meal carbs under 40g. Light-carb builds averaged +39.2 mg/dL across 7,045 logs — versus +51.5 mg/dL for very-heavy meals (110g+ carbs, n=3,099).
  • ▸You choose basmati over plain white. Basmati logs averaged +43.1 mg/dL versus +45.4 for plain white rice across 4,555 vs 19,726 logs — a −2.3 mg/dL discount before any pairing.
✗ Not for you if
  • ▸You eat rice as fried rice. Fried rice averaged +59.0 mg/dL versus +45.0 for plain steamed across 50 vs 30,633 logs (low confidence) — a +14 mg/dL penalty.
  • ▸You eat rice as part of a high-carb meal (≥60g total carbs). That load increased the glucose response by 23.6% — a CI of [+8.64, +9.85] mg/dL above the low-carb baseline (n=14,218, p<0.001).
  • ▸You default to sticky or glutinous rice. Sticky rice averaged +50.2 mg/dL across 639 logs — the highest variety in the cohort, +4.8 mg/dL above plain white.
  • ▸You log rice mostly at lunch or as a late-night snack. Lunch logs averaged +46.1 mg/dL (n=10,583) and night-snack logs hit +50.4 mg/dL (n=198) — the two highest meal-time windows in the cohort.
● How it fits your day

Calorie band and pairings (member-measured)

Per serving
332–598 kcal
A single-item rice log averages 332 kcal and 51g carbs (n=792); multi-item meals containing rice average 598 kcal and 66g carbs across 29,480 logged meals.
● Pair before
  • ▸Keep total meal carbs under 40g: light-carb builds averaged +39.2 mg/dL vs +51.5 mg/dL for very-heavy (110g+) — a 31% swing across 7,045 vs 3,099 logs.
  • ▸Add ≥15g of protein to the plate: meals meeting that threshold ran 7.8% lower than the no-protein baseline (n=26,463, CI [−4.72, −2.79] mg/dL, p<0.001).
● Pair after
  • ▸A 20-min walk within 30 min of eating blunts carb-driven peaks — especially relevant given 80.2% of single-item rice logs exceeded +30 mg/dL.
  • ▸Avoid stacking high-carb sides post-rice: meals with ≥60g total carbs spiked 23.6% higher than the low-carb baseline (n=14,218, p<0.001).
● Avoid pairing
  • ▸Eating rice as fried rice: fried-rice logs averaged +59.0 mg/dL vs +45.0 plain — a +14 mg/dL penalty (n=50, low confidence).
  • ▸Logging rice late at night: night-snack rice logs averaged +50.4 mg/dL (n=198), the highest meal-time window measured in the cohort.
● 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 white rice compares to other staples — and what the CGM data says about each

Frequently Asked Questions

Methodology

The page's headline numbers — mean peak +49.8 mg/dL, n=792, 572 members — come from the single-item cohort: meals where white rice was the only logged item. The broader cohort of 30,829 logged meals (approximately 9,839 unique Signos members) containing white rice in any form underpins the modifier calculator and the methodology section. 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. The single-item cohort median is +49 mg/dL with an IQR of 32 mg/dL (p25: +34, p75: +66). Rice logs were identified via a regex cohort match on the canonical food name "White Rice" and its common sub-forms (jasmine, basmati, sushi rice, sticky/glutinous rice). A minimum of 100 matched meals was required for any food pairing to appear in the recipe builder.

Limitations

  • Self-reported portion sizes introduce measurement error — a 'cup of rice' logged by one member may differ meaningfully in cooked weight and starch content from another's.
  • The single-item cohort (n=792, 572 members) is smaller than the broader mixed-meal cohort (30,829 logs); confidence is high but the IQR is wide (32 mg/dL), reflecting genuine individual variation rather than sampling error.
  • Cohort skews health-motivated; Signos members are actively monitoring glucose, so general population responses — particularly among people with greater insulin resistance — may differ.
  • The fried rice sub-cohort is small (n=50, low confidence); the +14 mg/dL delta vs. plain rice is directionally consistent but should be interpreted with caution.
  • The sushi-roll form sub-cohort fell below the publish threshold (n=14, fail confidence) and is excluded from the recipe builder; the +8 mg/dL directional signal is not statistically firm.
  • 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 white rice response

Across 1,349 logged meals where white rice was eaten alone, the average glucose peak was +49.2 mg/dL — but the IQR spans 32 mg/dL (p25: +33, p75: +65). That's not noise; it's biology. Your carb load at the meal, your protein pairing, even the rice variety all shift the outcome measurably. Grilled chicken drops the peak by −6 mg/dL in our cohort; a very heavy carb load pushes it up to +51.5 mg/dL. Only a CGM tells you which end of that range you live on.

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