The Meal Response Curve
See how a meal moves blood sugar — no CGM required. Build a plate, see the typical response, then watch protein, fibre, and a short walk flatten it.
These are population-average, educational curves — a rough picture of how a typical person might respond, not a reading for you. Not for diabetes management, insulin dosing, or any medical decision. If you're managing blood sugar, talk to your clinician.
GI × carbs ÷ 100
one number for how much a serving typically moves blood sugar
~45 minutes
after eating, settling back over 2–3 hours
Protein · fibre · a walk
each softens the typical peak within published ranges
Every carb-containing food has a published glycemic index — how fast its carbohydrate typically becomes blood sugar, with glucose scored 100. Multiply by the carbs actually on your plate and you get glycemic load, the honest single number for a meal. The curve scales a typical post-meal response by your plate's GL — and because real responses vary a lot from person to person, we always draw a range, not a confident line.
This is the CGM-era insight without the hardware: what you eat with your carbs, and what you do next, both change the curve. Pairing protein or fibre and taking a 15-minute walk after eating each flatten the typical response within ranges from intervention studies. Toggle them on and watch the before/after — the unmodified curve stays as a ghost so the difference is honest and visible.
Method & Sources
Glycemic index and glycemic load come from the International Tables of Glycemic Index and Glycemic Load 2021 (Atkinson et al.); carbohydrate amounts come from USDA FoodData Central (retrieved July 2026). The response curve is a stylized, population-average shape scaled by the plate's glycemic load — everyone responds differently, so we draw a variation band, not a single line. Protein, fibre, and a post-meal walk are modeled as flattening the typical response within published ranges, not by a precise amount. GL = GI × available carbohydrate ÷ 100, with glucose = 100 as the reference. Educational only; not calibrated to any individual.
Educational, Not Medical Advice
Daily Vitality tools organize information and published guidance — they don't diagnose conditions, and they're not a substitute for care. Talk with your doctor, pharmacist, or another clinician about what's right for you.
Managing blood sugar, prediabetes, or diabetes? This tool can't help with that — dosing and management decisions belong with your clinician and your own measured numbers.
Sources: International Tables of Glycemic Index and Glycemic Load 2021 (Atkinson et al., Am J Clin Nutr); USDA FoodData Central (carbohydrate per serving), seed values retrieved July 2026. Modifier effects: protein/fibre co-ingestion and post-meal walking intervention literature, expressed as ranges (citation strings pending clinician review). This tool stores nothing you enter — your inputs live only in this page's URL.