Tag: Fat vs glucose

The human brain alone consumes about 20% of the body's total energy, relying almost exclusively on glucose for fuel. This fact highlights the central role of why is glucose the preferred source of energy for our most vital functions. The body prioritizes glucose for its efficiency, speed, and versatility in energy production, especially compared to fats and proteins.

Gram for gram, fat provides over twice the energy of glucose, with fats yielding about 9 calories per gram compared to approximately 4 calories per gram for glucose. This stark difference in energy density has profound implications for how the body stores and utilizes energy from these two key macronutrients.