How is the Healthy Eating Gains & Losses Score calculated?

The Healthy Eating Gains & Losses Score adds four sub-scores — protein adequacy, macronutrient balance, vegetable intake, and calorie balance — each worth up to 25 points, then subtracts a processing penalty of up to 25 points. The final score ranges roughly from -50 to 100.

What does a negative score mean?

A negative Healthy Eating Gains & Losses Score indicates a nutritional loss scenario: the combination of poor macro balance, very low vegetable intake, calorie imbalance, and high ultra-processed food consumption is likely working against your health goals.

How much protein should I eat based on my goal?

The Healthy Eating Gains & Losses Score targets around 20% of calories from protein for maintenance, and up to 30% for muscle building or fat loss. These align with widely-cited sports nutrition and dietary guidelines.

Why is food processing level included in the score?

Ultra-processed foods are associated with higher intake of additives, refined sugars, and unhealthy fats, and lower intake of fiber and micronutrients. The Healthy Eating Gains & Losses Score applies a penalty of up to 25 points to reflect this real-world dietary quality dimension.

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Healthy Eating Gains & Losses Score

How to Use Healthy Eating Gains & Losses Score

The Healthy Eating Gains & Losses Score converts your daily diet data into a single actionable number. Follow these steps to get your score:

Select your daily goal — Choose Maintain Health, Build Muscle, or Lose Fat. The Healthy Eating Gains & Losses Score adjusts its calorie-balance and protein-target benchmarks to match your goal.
Choose food processing level — Indicate whether your meals today are mostly whole foods, a mix, or predominantly ultra-processed. This affects the processing penalty sub-score.
Enter macronutrient grams — Input how many grams of protein, carbohydrates, and fat you consumed today. Estimates from a food-tracking app or nutrition label reading work well here.
Enter vegetables and fruits (grams) — Include all vegetables, legumes, and fruits consumed. The benchmark for a full vegetable score is 400 g per day, in line with WHO dietary guidelines.
Enter your daily calorie target — This is your estimated maintenance or goal-adjusted calorie level. If you are unsure, a rough estimate based on body weight (e.g. bodyweight in kg × 30 for maintenance) is sufficient.
Read the result — The Healthy Eating Gains & Losses Score displays your total score, a status label, and four sub-scores so you know exactly where to improve.

The score updates instantly as you adjust any input, making it easy to compare dietary scenarios side by side.

Formula & Theory — Healthy Eating Gains & Losses Score

The Healthy Eating Gains & Losses Score is composed of four additive sub-scores (each 0–25) and one penalty:

Score = ProteinScore + MacroBalanceScore + VegetableScore + CalorieBalanceScore - ProcessingPenalty

Protein Adequacy Score (0–25)

ProteinRatio = (protein_g × 4) / total_macro_kcal
ProteinTarget = 0.20 (maintain) | 0.30 (muscle or fat-loss)
ProteinScore = max(0, 25 - |ProteinRatio - ProteinTarget| × 200)

Symbol	Meaning
protein_g	Daily protein intake in grams
total_macro_kcal	Calories from all three macros combined
ProteinTarget	Goal-specific protein calorie ratio

Macronutrient Balance Score (0–25)

CarbRatio = (carbs_g × 4) / total_macro_kcal
FatRatio  = (fat_g × 9)   / total_macro_kcal

CarbScore = 25 if 0.30 ≤ CarbRatio ≤ 0.60, else max(0, 25 - |CarbRatio - 0.45| × 150)
FatScore  = 25 if 0.20 ≤ FatRatio  ≤ 0.35, else max(0, 25 - |FatRatio  - 0.275| × 150)
MacroBalanceScore = (CarbScore + FatScore) / 2

Vegetable & Fruit Score (0–25)

VegetableScore = min(25, (vegetables_g / 400) × 25)

A full score of 25 is achieved at 400 g/day or above — the WHO-recommended minimum intake.

Calorie Balance Score (0–25)

CalBalance = (total_macro_kcal - CalorieTarget) / CalorieTarget

For Maintain:  CalScore = max(0, 25 - |CalBalance| × 150)
For Fat-Loss:  CalScore = 25 if -0.30 ≤ CalBalance ≤ 0, else max(0, 25 - |CalBalance| × 100)
For Muscle:    CalScore = 25 if 0 ≤ CalBalance ≤ 0.20, else max(0, 25 - |CalBalance - 0.10| × 100)

Processing Penalty (0–25)

Level	Penalty
Whole / minimally processed	0
Mixed (some processed)	10
Mostly ultra-processed	25

Assumptions and Limits

The Healthy Eating Gains & Losses Score model is intentionally simplified for fast, browser-based estimation. It does not account for micronutrient completeness, meal timing, individual metabolic variation, or food allergies. Scores below 0 are capped at −50; scores above 100 are capped at 100.

Use Cases for Healthy Eating Gains & Losses Score

The Healthy Eating Gains & Losses Score is useful for a broad range of individuals and contexts:

Daily diet tracking — Log yesterday’s meals and calculate the Healthy Eating Gains & Losses Score each morning to build awareness of dietary patterns over time.
Goal comparison — Toggle between goals (maintain, muscle, fat-loss) to see how the same meal performs across different targets.
Dietary coaching — Coaches and nutritionists can use the Healthy Eating Gains & Losses Score to give clients a quick, objective snapshot of their dietary quality before a more detailed analysis.
Meal planning — Estimate the score for a planned meal before cooking to identify and correct macro or vegetable gaps in advance.
Health education — Students and educators can explore how individual dietary variables affect overall nutritional balance using the Healthy Eating Gains & Losses Score’s transparent sub-score breakdown.
Behavior change motivation — Watching your Healthy Eating Gains & Losses Score improve over weeks provides concrete, quantified evidence of dietary progress — a powerful motivational tool.

Whether you are just starting a health journey or fine-tuning an already balanced diet, the Healthy Eating Gains & Losses Score offers a clear, actionable window into your daily nutritional gains and losses.