Explainers
Plain-language deep dives for public audiences
Caffeine Does Not Create Energy—It Masks Fatigue, Study Shows
Caffeine does not produce energy but instead blocks the brain's fatigue signals, allowing tiredness to accumulate invisibly. Genetic variation in…
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How Two Minerals Lock Down Brain Anxiety: Magnesium and Zinc’s Dual Control of Neural Excitation
The brain's primary anxiety-regulating system relies on two independent mineral-based brakes: magnesium physically blocks the NMDA receptor's ion channel pore,…
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Why the ‘2pm coffee cutoff’ is a myth: genetics and lifestyle create a 15-fold range in caffeine metabolism
A new systematic review reveals that caffeine half-life varies 15- to 40-fold across healthy adults,…
Resistant Starch and Gut Health: Why Fiber Type Matters More Than You Think
Resistant starch works through a specific bacterial fermentation pathway that other fibers do not, requiring…
The 30-gram protein myth: why recent evidence challenges the fitness industry’s most durable claim
For over a decade, the fitness industry has promoted a rule: your body can only…
How the gut absorbs nutrients with molecular precision: A seven-meter biochemical assembly line
The human gastrointestinal tract functions as a seven-meter nutrient-extraction assembly line, with each segment specializing…
How muscle contraction clears blood glucose independently of insulin after meals
Skeletal muscle activates a second glucose-clearance pathway during physical activity that operates independently of insulin,…