Recent neuroscience research identifies three actionable principles for maintaining optimal brain function. First, understand that cognitive work increases brain energy use by only approximately 5% because the brain’s baseline metabolic cost is already extremely high—the real energy burden lies in maintaining neurons and synapses, not in the act of thinking itself. Second, recognize that executive control networks responsible for decision-making and emotional regulation are metabolically expensive and are the first to deteriorate under poor sleep, chronic stress, or inadequate nutrition. Third, prioritize stable blood glucose levels and regular meals over reliance on willpower alone. Large glucose spikes and crashes impair attention and decision-making capacity, whereas consistent nutritional support sustains the frontoparietal control networks essential for complex cognitive work. Together, these insights suggest that cognitive sustainability depends primarily on lifestyle factors—nutrition, sleep, and stress management—rather than mental effort alone. Read the full article on GMJ Newsroom.
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