Explainers
Plain-language deep dives for public audiences
How Your Brain Cleans Itself: The Glymphatic System Explained
Your brain operates a continuous waste-removal system called the glymphatic system, which uses cerebrospinal fluid guided by specialized astrocyte cells…
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Why creatine works in muscle but not the brain—yet
Creatine supplementation raises muscle creatine by 20–50% in days, but brain creatine increases by only 4% due to the blood–brain…
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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,…
Why Spinach Iron Doesn’t Count Like Meat Iron: The Bioavailability Gap
A cup of spinach contains 6 mg of iron but only 2–20% is absorbed, while…
How Coffee Brewing Method Affects Cholesterol: The Science Behind Diterpenes and Filters
Coffee's effect on cholesterol depends entirely on brewing method. Unfiltered coffee—French press, espresso, Turkish—allows diterpenes…