Healthy Food Guideby KarbCoach

Healthy Food Guide by KarbCoach

Kellogg's Corn Flakes Cereal: Food Integrity analysis

Updated 2026-10-17 · Kellogg's

Quick answer

Mixed integrity

Kellogg's corn flakes cereal received a Food Integrity Score of 74 out of 100 (mixed integrity). This reflects lightly processed and low additive load. This is a fairly short list built on milled corn, but the sugar and malt flavor give it a sweetened, flavored profile. The fortification vitamins are common in cereals and aren't a major concern on their own. Eat it occasionally rather than as a daily staple if you're watching formulated flavorings and added sugar. Main considerations include malt flavor is a vague flavor system, added sugar is a refined sweetener, and multiple synthetic vitamin fortificants. Simpler options: Choose a cereal with no added sugar or flavor systems; pick plain milled corn or oat products with short ingredient lists.

Food Integrity Score 74/100

What stood out on the label?

  • Lightly processed
  • Low additive load
  • Transparency: High

What to watch?

  • Malt flavor is a vague flavor system
  • Added sugar is a refined sweetener
  • Multiple synthetic vitamin fortificants

Simpler options to consider

  • Choose a cereal with no added sugar or flavor systems
  • Pick plain milled corn or oat products with short ingredient lists

You are viewing ingredients and processing. Switch to Longevity for nutrition and longer-term eating pattern fit.

Source data, GTIN, and Healthy Food Guide analysis details

Product facts

Product
Kellogg's Corn Flakes Cereal
Category
Breakfast & Cereal (source: Processed Cereal Products)
GTIN / UPC
00038000001956
Serving size
21 g (1 Container)
Source data — ingredients
Ingredient list from product label data (see Sources)
Healthy Food Guide analysis
Independent Longevity and Food Integrity scorecards. See methodology under Sources.
Data last verified

Food Integrity results

Corn Flakes Cereal

Kellogg's

Mixed integrity

Warning Signs

Malt flavor and added sugar sit near the top of the list, and the vitamin blend adds fortification helpers.

Consider This

Malt flavor is a vague flavor system, and the vitamin and mineral premix reflects a fortified, formulated cereal rather than plain corn.

Good Substitutes

Plain milled corn cereal or plain cornmeal porridge with no added sugar or flavor systems.

Overall Assessment

Mixed integrity

This is a fairly short list built on milled corn, but the sugar and malt flavor give it a sweetened, flavored profile. The fortification vitamins are common in cereals and aren't a major concern on their own. Eat it occasionally rather than as a daily staple if you're watching formulated flavorings and added sugar.

Key Highlights

What stood out

  • Malt flavor is a vague flavor system
  • Added sugar is a refined sweetener
  • Multiple synthetic vitamin fortificants

Family Watchlist

Ingredients some users may personally want to know about.

  • Sugar — Refined sweetener many users track.
  • Malt flavor — Vague flavor system with unspecified composition.

Highest concern ingredients

  • Malt flavor (6/10) — Vague flavor system used to enhance taste.
  • Sugar (4/10) — Refined sweetener added to the formula.

Better choice tips

  • Choose a cereal with no added sugar or flavor systems.
  • Pick plain milled corn or oat products with short ingredient lists.

Ingredients

Ingredient list

INGREDIENTS: MILLED CORN, SUGAR, MALT FLAVOR, CONTAINS 2% OR LESS OF salt. VITAMINS AND MINERALS: Iron (ferric phosphate), niacinamide, vitamin B6 (pyridoxine hydrochloride), vitamin B2 (riboflavin), vitamin B1 (thiamin hydrochloride), folic acid, vitamin D3. vitamin B12.

Formulations can vary — check the package label for the final word.

Highest-concern ingredients first. Expand an item for notes.

  1. Malt flavorConcern 6/10 — Moderate concernVague ingredientWatchlist · Additive · Vague label term

    What this is

    Vague ingredient

    Processing category

    Processed

    Main concern area

    Family Watchlist

    Why it matters

    Flavor systems are broad and not fully specified on the label.

    Additional note

    Vague flavor system used to enhance taste.

    Family watchlist

    Vague flavor system with unspecified composition.

  2. SugarConcern 4/10 — Mild concernSweetenerWatchlist

    What this is

    Sweetener

    Processing category

    Natural refined

    Main concern area

    Ingredient concern

    Why it matters

    Added sugar is a common refined sweetener to track.

    Additional note

    Refined sweetener adds sweetness to the formula.

    Family watchlist

    Refined sweetener many users track.

  3. Milled cornConcern 2/10 — Very low concernSimple food

    What this is

    Simple food

    Processing category

    Natural refined

    Main concern area

    Processing

    Why it matters

    Milled grain is expected processing for corn flakes.

    Additional note

    Milling is category-normal for corn cereal.

  4. Iron (ferric phosphate)Concern 2/10 — Very low concernFortification

    What this is

    Fortification

    Processing category

    Processed

    Main concern area

    Processing

    Why it matters

    Fortification nutrients are common in fortified cereals.

    Additional note

    Mineral fortification added to the cereal.

View all 12 ingredient assessments
  1. NiacinamideConcern 2/10 — Very low concernVitamin fortificant

    What this is

    Vitamin fortificant

    Processing category

    Synthetic / man-made

    Main concern area

    Processing

    Why it matters

    Synthetic vitamin forms are typical of fortified cereals.

    Additional note

    Synthetic B vitamin added for fortification.

  2. Vitamin B6 (pyridoxine hydrochloride)Concern 2/10 — Very low concernVitamin fortificant

    What this is

    Vitamin fortificant

    Processing category

    Synthetic / man-made

    Main concern area

    Processing

    Why it matters

    Synthetic vitamin forms are typical of fortified cereals.

    Additional note

    Synthetic B vitamin added for fortification.

  3. Vitamin B2 (riboflavin)Concern 2/10 — Very low concernVitamin fortificant

    What this is

    Vitamin fortificant

    Processing category

    Synthetic / man-made

    Main concern area

    Processing

    Why it matters

    Synthetic vitamin forms are typical of fortified cereals.

    Additional note

    Synthetic B vitamin added for fortification.

  4. Vitamin B1 (thiamin hydrochloride)Concern 2/10 — Very low concernVitamin fortificant

    What this is

    Vitamin fortificant

    Processing category

    Synthetic / man-made

    Main concern area

    Processing

    Why it matters

    Synthetic vitamin forms are typical of fortified cereals.

    Additional note

    Synthetic B vitamin added for fortification.

  5. Folic acidConcern 2/10 — Very low concernVitamin fortificant

    What this is

    Vitamin fortificant

    Processing category

    Synthetic / man-made

    Main concern area

    Processing

    Why it matters

    Synthetic folate is common in fortified cereals.

    Additional note

    Synthetic folate form added for fortification.

  6. Vitamin D3Concern 2/10 — Very low concernVitamin fortificant

    What this is

    Vitamin fortificant

    Processing category

    Synthetic / man-made

    Main concern area

    Processing

    Why it matters

    Vitamin D3 is a common cereal fortificant.

    Additional note

    Vitamin added for fortification.

  7. Vitamin B12Concern 2/10 — Very low concernVitamin fortificant

    What this is

    Vitamin fortificant

    Processing category

    Synthetic / man-made

    Main concern area

    Processing

    Why it matters

    Vitamin B12 is a common cereal fortificant.

    Additional note

    Vitamin added for fortification.

  8. SaltConcern 1/10 — Very low concernSimple food

    What this is

    Simple food

    Processing category

    Whole food

    Why it matters

    Small amount of a basic seasoning.

    Additional note

    Basic seasoning, listed as 2% or less.

This Food Integrity score estimates how close a food appears to a simple, recognizable ingredient profile. It is not a medical safety rating. Formulations can vary by region, size, and packaging. Check the package label for ingredients, allergens, and nutrition. Not medical advice — do not use this site or the KarbCoach mobile app for allergy or health decisions.

How this product may fit different goals

The same food can look different depending on what matters most to you. Here is a general preview of how this product may align with several common goals.

  • Low Sugar Lifestyle

    Watch-outs

    Metabolic Health

    For someone prioritizing Low Sugar Lifestyle, the analysis identifies considerations that may matter more than the general product score alone.

    A consideration: Sweetener/sugar on watchlist (see Food Integrity)

    See more for this goal

  • Low-Carb Lifestyle

    Watch-outs

    Dietary Patterns

    For someone prioritizing Low-Carb Lifestyle, the analysis identifies considerations that may matter more than the general product score alone.

    A consideration: Carb-dense ingredients (Mentions "sugar". See ingredients for details.)

    See more for this goal

  • Keto-Style Eating

    Watch-outs

    Dietary Patterns

    For someone prioritizing Keto-Style Eating, the analysis identifies considerations that may matter more than the general product score alone.

    A consideration: Carb-dense ingredients (Mentions "sugar". See ingredients for details.)

    See more for this goal

  • Low Gluten Eating

    Watch-outs

    Dietary Patterns

    For someone prioritizing Low Gluten Eating, the analysis identifies considerations that may matter more than the general product score alone.

    A consideration: Gluten-related ingredients (Mentions "malt". See ingredients for details.)

    See more for this goal

  • Minimally Processed Eating

    Watch-outs

    Dietary Patterns

    For someone prioritizing Minimally Processed Eating, the analysis identifies considerations that may matter more than the general product score alone.

    A consideration: Family watchlist items (Sugar)

    See more for this goal

  • Whole-Food Focused Eating

    Watch-outs

    Dietary Patterns

    For someone prioritizing Whole-Food Focused Eating, the analysis identifies considerations that may matter more than the general product score alone.

    A consideration: Family watchlist items (Sugar)

    See more for this goal

See how this product fits your goals

Choose what matters most to you and explore a more detailed interpretation of this product's nutrition, ingredients, and tradeoffs.

Personalize this analysis

Understanding the Food Integrity analysis

What the Food Integrity analysis evaluates

The Food Integrity analysis focuses on how a packaged food is formulated and made. It examines processing level, ingredient quality, additives, oils, sweeteners, purity cues, and how clearly a label communicates what is in the product. The Food Integrity Score summarizes that formulation and transparency picture on a 0–100 scale. It is not a full nutrient report and it is not a personalized meal plan.

Why processing, ingredients, and transparency matter

Processing level and ingredient quality shape what you are actually eating beyond calories on the label. Additives, industrial oils, and intense sweeteners can change how clean or heavily engineered a product feels, even when the front of pack looks wholesome. Purity and transparency matter because incomplete or marketing-heavy labeling can hide tradeoffs that only show up when the full ingredient list is reviewed carefully.

Who may prioritize Food Integrity

Some people care mainly about Food Integrity because their dietary goals center on formulation rather than macros alone. Examples include checking vegetarian or vegan suitability, preferring simpler ingredient sources, avoiding certain additives or sweeteners, watching oil choices, or preferring less processed options. For those priorities, the Food Integrity Score can be the more practical first read.

How Food Integrity differs from Longevity

Food Integrity is the focused analysis of processing, ingredients, additives, purity, and transparency. Longevity is the broader analysis of nutritional composition, metabolic and dietary characteristics, processing, and ingredient quality together. Favorable nutrition values do not necessarily mean strong Food Integrity: a product can look balanced on macros yet still rely on heavy processing or additives that the Food Integrity analysis flags in more detail.

Why the two analyses overlap—and why to review Longevity too

The analyses overlap intentionally. Food Integrity–related characteristics contribute to Longevity, and Longevity still benefits from the same ingredient-quality lens. They are not competing verdicts; they answer different questions at different depths. Reviewing the Longevity analysis can add information about nutritional composition, metabolic characteristics, and dietary balance that Food Integrity alone does not emphasize. Looking at both usually gives the most complete understanding of tradeoffs.

Common questions about this product

Is Kellogg's Corn Flakes Cereal highly processed?

Food Integrity lists processing level as Lightly processed. That reflects formulation and processing signals from the ingredient analysis — not a medical or regulatory classification.

Why are the Longevity and Food Integrity scores different?

Longevity emphasizes nutrition per serving and longer-term dietary alignment. Food Integrity emphasizes ingredients, additives, processing, and label transparency. The same product can score differently on those lenses.

How much fiber is in one serving?

Kellogg's Corn Flakes Cereal shows about 0.69g of fiber per labeled serving in the Longevity nutrition facts.

Does it contain added sugar?

Kellogg's Corn Flakes Cereal: 2.1g added sugar per serving; sweetener signals include Added sugar. Confirm the current package Nutrition Facts and ingredient list.

What helped the Longevity Score?

Key positives called out in the analysis include: Short ingredient list with few additives; Fortified with B vitamins and iron; Low saturated fat and low calorie per serving.

What prevented a perfect Longevity Score?

Key concerns noted include: Refined milled corn with very little fiber; Added sugar listed as a main ingredient; Low protein for a breakfast serving.

Who might evaluate this product differently?

People prioritizing different goals (for example lower carbs, higher protein, or minimally processed eating) may weigh the same breakfast & cereal differently. Use the goal preview on this page, then personalize in KarbCoach for your priorities.

Other published analyses in Breakfast & Cereal, selected from the same Healthy Food Guide catalog.

Source data and Healthy Food Guide analysis

  1. Public label databases (including USDA FoodData Central and Open Food Facts) — Possible sources for package ingredients and nutrition.
  2. Healthy Food Guide analysis (Longevity and Food Integrity) — Independent Longevity and Food Integrity scorecards.
  3. How the Longevity Score is calculated
  4. How the Food Integrity Score is calculated
  5. Scoring models: KarbCoach Longevity and Food Integrity.
  6. Independent analysis. No manufacturer affiliation.
  7. Formulations can vary by region, size, and packaging. Check the package label for ingredients, allergens, and nutrition. Not medical advice — do not use this site or the KarbCoach mobile app for allergy or health decisions. Full sources and safety details.
Label accuracy and safety information

Formulations can vary by region, size, and packaging. Check the package label for ingredients, allergens, and nutrition. Not medical advice — do not use this site or the KarbCoach mobile app for allergy or health decisions.

Sources, citations & safety

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