First-party app output
DietVox scan example
Onion scan
RED
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Scan recording
Direct answer: Under the DietVox Low Sugar profile, Onion is currently GREEN for plain raw, steamed, boiled or otherwise simply prepared Onion. The exact label, serving and added ingredients remain relevant. General dietary context is available from NHS guidance on reducing sugar.
Assessment context
Do not transfer the result without checking the food form. Fried, creamed, pickled, dressed, sauced and blended preparations change the complete dish. Include oils, dressings and sauces in the serving being assessed.
Food record and preparation
- The reference record classifies Onion within vegetables, with the subtype “Allium”.
- The imported scientific or reference name is Allium cepa.
- The stored source identifier is FDC ID 170000 in USDA FoodData Central, specific to the imported reference form.
Protocol-by-protocol view
Its cross-protocol result combines Acid Reflux RED, Low Sugar GREEN, Weight Loss GREEN and Balanced Eating GREEN as four distinct comparisons. These are DietVox comparison labels, not physiological claims. Protocol context: NHS guidance on reducing sugar.
Continue comparing
For a broader decision, review the following nearby food profiles:
- Garlic — complete food-rating page
- Eggplant — complete food-rating page
- Cucumber — complete food-rating page
- Kimchi — complete food-rating page
Source scope and editorial status
DietVox Editorial last checked NHS guidance on reducing sugar and USDA FoodData Central on 28 July 2026. This article has not been medically reviewed; an individual result is not implied.
Nutrition data provenance: DietVox matched the imported per-100g profile to USDA FoodData Central FDC ID 170000, Onions, raw. Checked 28 July 2026.
How It Works
For Onion, DietVox reports a Low Sugar profile output without inferring an individual biological response. General context comes from NHS guidance on reducing sugar.
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DietVox analyses foods across 4 diet protocols, with preparation and portion context.
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Frequently Asked Questions
Are cooked onions higher in sugar than raw onions?
Raw and cooked onion recipes differ in water, ingredients and serving. Compare the actual recipe and label; this page does not establish a universal sugar-concentration or low-sugar outcome.
Which type of onion is best for a low sugar diet: red, yellow, or white?
Onion varieties and products differ in profile and recipe. No variety is universally best for low-sugar eating; compare the actual product and serving.
How much onion can I eat per day on a low sugar diet?
There is no universal onion amount for low-sugar eating. The product, serving and individual dietary target all matter; a 100–150 g range is not a prescription.
Does onion powder have more sugar than fresh onion?
Onion-powder and fresh-onion products differ in preparation and serving. Compare the actual label and ingredient list; this page does not establish fixed sugar values or a universal low-sugar outcome.

