What is the 494 Rule for Calories? Deciphering the 4-4-9 System
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5 min read
Chemist Wilbur O. Atwater first established the calorific values for macronutrients in the 1800s, forming the basis for modern nutrition labels. This principle, often mistakenly called the "494 rule," is actually the 4-4-9 system, which provides a standard way to calculate the energy content of food.
