Tag: Astrocytes

The brain requires a highly controlled and constant supply of iron for proper function, with its needs met through a complex transport system that primarily relies on the blood-brain barrier. This critical mineral is essential for everything from neurotransmitter synthesis to myelin production.

Historically underestimated due to its relatively low concentration, brain glycogen is now recognized as a pivotal player in central nervous system metabolism. Far from being a simple backup fuel, modern research reveals that what glycogen does for the brain extends to essential functions like synaptic plasticity, learning, and managing metabolic stress.

The human brain, despite making up only 2% of body weight, accounts for a staggering 20% of the body's total resting energy consumption. This immense demand necessitates a constant and reliable fuel supply, leading many to question: does your brain use glucose for energy, and is it its only source?

The human brain consumes approximately 20% of the body's total energy expenditure at rest, despite comprising only about 2% of the total body weight. This astonishing energy demand is fueled predominantly by glucose, but the brain can also adapt to use alternative energy substrates under certain circumstances. Understanding what the brain metabolizes for energy provides key insights into neurological function and disease.

According to numerous studies, deficient levels of omega-3s in the brain can alter glutamate transmission and impair cognitive function. This leads many to wonder about the precise relationship between omega-3 intake and the excitatory neurotransmitter glutamate, including the misconception that it might be increased to unhealthy levels.