Healthy Food Guideby KarbCoach

Healthy Food Guide by KarbCoach

Kellogg's Frosted Flakes Cereal Marshmallow: Longevity analysis

Updated 2026-10-19 · Kellogg's

Quick answer

Special Occasion Choice

Kellogg's frosted flakes cereal marshmallow received a Longevity Score of 22 out of 100 (special occasion choice). Refined corn cereal with high added sugar and low fiber; limited whole-food content for a Longevity-focused pattern. Strengths include fortified with vitamins and iron, low saturated fat, and low cholesterol, while main considerations include high added sugar (sugar, corn syrup, dextrose), refined corn base with very low fiber, and ultra-processed ingredient list.

Longevity Score 22/100

What helped the score?

  • Fortified with vitamins and iron
  • Low saturated fat
  • Low cholesterol

What held the score back?

  • High added sugar (sugar, corn syrup, dextrose)
  • Refined corn base with very low fiber
  • Ultra-processed ingredient list

You are viewing the nutrition and longevity perspective. Switch to Food Integrity for ingredients and processing.

Source data, GTIN, and Healthy Food Guide analysis details

Product facts

Product
Kellogg's Frosted Flakes Cereal Marshmallow
Category
Breakfast & Cereal (source: Processed Cereal Products)
GTIN / UPC
00038000199226
Serving size
39 g (1 Cup)
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

Kellogg's

Frosted Flakes Cereal Marshmallow

Special Occasion Choice

KarbCoach Recommendation

Special Occasion Choice

Refined corn cereal with high added sugar and low fiber; limited whole-food content for a Longevity-focused pattern.

What Stands Out

Low Fiber

0.8g fiber

3% DV

High Added Sugar

16g added sugar

32% DV

Refined Grains

Milled and refined corn base

Added Sweetener

Sugar

DV = Percent of Daily Value based on a 2,000 calorie diet

Key Positives

  • Fortified with vitamins and iron
  • Low saturated fat
  • Low cholesterol

Key Concerns

  • High added sugar (sugar, corn syrup, dextrose)
  • Refined corn base with very low fiber
  • Ultra-processed ingredient list
  • Artificial-style flavorings and additives

Ingredient Signals

Whole-food ingredients

Milled corn

Processing signals

Milled and refined corn baseModified corn starchMultiple added sugars and syrups

Additives

Malt flavorNatural flavorGelatinVitamin and mineral fortification

Added sweeteners

SugarCorn syrupDextrose

Ingredients

Ingredient list

Ingredients: Milled corn, sugar, contains 2% or less of malt flavor, corn syrup, modified corn starch, dextrose, salt, gelatin, natural flavor.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.

Macronutrients

Calories

144

7% DV

Total Carbs

34.9g

13% DV

Protein

1.5g

3% DV

Saturated Fat

0g

0% DV

Fiber

0.8g

3% DV

Net Carbs

34.1g

12% DV

Sugar

16.6g

Added Sugar

16g

32% DV

Total Fat

0.1g

0% DV

Sodium

172mg

7% DV

Cholesterol

0mg

0% DV

Unsaturated Fat

0.1g

DV = Percent of Daily Value based on a 2,000 calorie diet

Nutrition at a Glance

Nutrition at a Glance
NutrientAmount% Daily Value
Calories1447% DV
Total Carbs34.9g13% DV
Protein1.5g3% DV
Saturated Fat0g0% DV
Fiber0.8g3% DV
Net Carbs34.1g12% DV
Sugar16.6g—
Added Sugar16g32% DV
Total Fat0.1g0% DV
Sodium172mg7% DV
Cholesterol0mg0% DV
Unsaturated Fat0.1g—

DV = Percent of Daily Value based on a 2,000 calorie diet

Amounts are per labeled serving from source data. Check the package for the final values.

Longevity scores estimate how this product’s nutrition and ingredient profile fit longer-term eating patterns. Formulations can vary — check the package label. Not medical advice. Some nutrient values may be estimated when the label is incomplete.

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-Spike Stability

    Watch-outs

    Metabolic Health

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

    A consideration: Higher net carbs (34.1g)

    This product has 3 additional signals for this goal.

    See more for this goal

  • Heart-Healthy Eating

    Supportive

    Metabolic Health

    For someone prioritizing Heart-Healthy Eating, the available data suggest this product may align in helpful ways.

    A supportive signal: Low saturated fat (0g)

    See more for this goal

  • GLP-1 Eating Support

    Watch-outs

    Metabolic Health

    For someone prioritizing GLP-1 Eating Support, the analysis identifies considerations that may matter more than the general product score alone.

    A consideration: Lower protein (1.5g)

    This product has 1 additional signal for this goal.

    See more for this goal

  • 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: Higher sugar (16.6g)

    This product has 2 additional signals for this goal.

    See more for this goal

  • Appetite & Portion Awareness

    Mixed

    Metabolic Health

    For someone prioritizing Appetite & Portion Awareness, the same nutrition and ingredient data show both supportive signals and tradeoffs.

    A tradeoff: Higher sugar (16.6g)

    This product has 1 additional signal for this goal.

    See more for this goal

  • Athletic Fueling

    Watch-outs

    Athletic Performance

    For someone prioritizing Athletic Fueling, the analysis identifies considerations that may matter more than the general product score alone.

    A consideration: Carbohydrate is almost entirely sugar (16.6g of 34.9g carbs)

    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 Longevity analysis

What the Longevity analysis evaluates

The Longevity analysis looks at how a food fits broader dietary patterns over time. It combines nutritional composition with processing and ingredient-quality considerations, including ideas that originated in Meal Power Points and Food Integrity. The Longevity Score summarizes that wider picture on a 0–100 scale. It is educational context for packaged foods, not medical advice and not a guarantee of health outcomes.

Nutrients, balance, processing, and ingredients

Nutritional composition matters: protein, fiber, carbohydrates, glucose-related characteristics, fats, sodium, and micronutrients all influence how a food may support or challenge different dietary goals. Processing level and ingredient quality still count, because formulation can change the practical meaning of an otherwise tidy nutrient panel. Longevity treats those dimensions together rather than as a single nutrient number.

Who may prioritize Longevity

People following low-carbohydrate, keto-style, high-protein, glucose-conscious, or longevity-focused eating patterns often start with the Longevity analysis. It is also useful when you want one place that connects macros and micros with how processed the food is and how the ingredient list reads. The Longevity Score is designed for that broader comparison across products.

How Longevity differs from Food Integrity

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. A strong nutritional profile may still deserve closer Food Integrity review when additives, oils, sweeteners, or processing level raise questions the nutrient panel does not answer on its own.

Why the analyses overlap—and why to review both

The overlap is intentional. Food Integrity–related characteristics contribute to Longevity, while Food Integrity remains separately useful for deeper formulation detail. The two views are meant to complement each other, not cancel each other out. Some people reasonably prioritize one analysis based on their goals; reviewing both can reveal tradeoffs that one score alone may not show.

Common questions about this product

Is Kellogg's Frosted Flakes Cereal Marshmallow highly processed?

Food Integrity lists processing level as Highly 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 Frosted Flakes Cereal Marshmallow shows about 0.78g of fiber per labeled serving in the Longevity nutrition facts.

Does it contain added sugar?

Kellogg's Frosted Flakes Cereal Marshmallow: 16g added sugar per serving; sweetener signals include Sugar, Corn syrup. Confirm the current package Nutrition Facts and ingredient list.

What helped the Longevity Score?

Key positives called out in the analysis include: Fortified with vitamins and iron; Low saturated fat; Low cholesterol.

What prevented a perfect Longevity Score?

Key concerns noted include: High added sugar (sugar, corn syrup, dextrose); Refined corn base with very low fiber; Ultra-processed ingredient list.

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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