Tag: Fueling the brain

Despite weighing only about 2% of the body's total mass, the adult human brain is a metabolic powerhouse, consuming around 20% of the body's total resting energy. This makes it one of the most energy-demanding organs, and a constant, steady fuel supply is crucial for optimal cognitive function. This article explores the answer to how many calories of carbohydrates does the brain use per day.

The human brain, despite making up only 2% of the body's weight, consumes about 20-25% of its resting energy. Under normal circumstances, this energy comes almost exclusively from glucose. This fact leads many to wonder: does the brain prefer glucose or ketones, and how does it adapt to different fuel sources?

The human brain, despite making up only 2% of the body's weight, consumes about 20% of its total energy, with glucose as its main fuel. This remarkable fact highlights the brain's high energy demand and leads to the critical question: **Does your brain need a constant supply of glucose?**