Practical Nutrition September 6, 2026
Raw vs Cooked Weight: Why 100g of Rice Completely Changes Calories
Discover how water absorption and evaporation alter caloric density during cooking, and learn whether you should track food raw or cooked.
Permanent Clinical Knowledge Base
Nutrition Science & Calculation Guides
Deep dive into the biochemical laws governing energy extraction, physical food mass conversions, and federal labeling standards.
Practical Nutrition 
Metabolic Science September 6, 2026
Understanding the 4-4-9 Rule: How Grams Convert to Calories
A deep dive into Wilbur Atwater's foundational energy conversion factors: 4 kcal for protein and carbs, and 9 kcal for fats.
Food Industry & Regulations September 6, 2026
Why Food Labels Don't Match Macro Math: FDA Rounding Rules Explained
Have you ever multiplied protein by 4, carbs by 4, and fat by 9 on a nutrition facts label and arrived at a completely different calorie total? Here is why.
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