Category Health

Learn which running-health claims need medical evidence, emergency action, supplement caution, or official race guidance.

A practical runner's guide to weekly training, injury signals, heat emergencies, fueling, aging, and pregnancy.

What fish oil actually does for runners: modest soreness relief at doses that carry a measurable, dose-dependent atrial fibrillation risk.

Trial data shows nattokinase shifts clotting within hours — here's how runners on ibuprofen, fish oil, or facing surgery should handle it.

Particle size testing won't change a runner's treatment, but Lp(a) will — here's which advanced lipid tests earn their cost and why.

Endurance training shortens red-cell lifespan by about 40%, which quietly skews A1C — here is which metabolic tests to trust instead.

Which running palpitations need an ambulance, which need a monitor, and what the 2025 JAMA race data says about real risk.

A step-by-step way to decide whether a calcium scan will actually change your treatment — and why trained male runners score higher.

Exact AQI cutoffs for runners, why smoke particles hit harder than city air, and which masks and indoor setups actually lower your dose.

A mechanical explanation for the same black toenail every training block — and the lacing, sizing and taping changes that actually break the cycle.