Zucchini
A non-starchy vegetable with a trivial glycemic load — you can eat it freely without moving insulin.
FatTonic Facts
Zucchini · per serving 1 cup sliced (124g)
Excellent · strongly supports fat-burning
| Factor | Amount | Points |
|---|---|---|
| Start | 100.0 | |
| Glycemic load | 0 | 0.0 |
| Sugar (g) | 3 | −2.4 |
| Processing | whole | 0.0 |
| Fiber (g) | 1 | +1.6 |
| Protein (g) | 1 | +0.7 |
| Glycemic index | not tested | |
| Carbs (g) | 4 | |
| Fat (g) | 0 |
Score model v1
Nutrients: USDA FoodData Central, record 169291 (Squash, summer, zucchini, includes skin, raw), public domain, checked 2 Oct 2026.
Glycemic index: not tested — too little carbohydrate to test (University of Sydney GI FAQ); the score assumes 15.
Per 100 g (USDA record; serving 124 g): carbs 3.1, sugar 2.5, fiber 1, protein 1.2, fat 0.3 g.
What this means for fat-burning
Why this score: sugar 3 g set it, −2.4 points. Source: USDA FoodData Central, FDC 169291.
See how your whole day scores — free Metabolic Score →This food and 199 more, scored on your phone.
Among the 200 rated foods
Zucchini scores 100, rated Excellent. It scores higher than 75% of the 200 rated foods.
Rated foods per band: Avoid 0–19: 11; Poor 20–39: 23; Moderate 40–59: 34; Good 60–79: 45; Excellent 80–100: 87.
Frequently asked questions
Does zucchini spike insulin?
Glycemic load 0 for 1 cup sliced (124g); FatTonic Score 100/100 — it strongly supports fat-burning.
Is zucchini good for fat loss?
Excellent (100/100): zucchini strongly supports fat-burning.
Better in vegetables
Zucchini ties for the best in vegetables on this index.