Know what your body runs on.
Honest notes from 2 authors on vitamins, energy, sleep and blood testing. Studies and doses, not hype.
Why your multivitamin probably is not working
Generic doses, cheap forms, and nutrients that cancel each other out - the case for a formula built from your answers.
The afternoon energy crash: what actually causes it
Blood sugar, iron, B12 and sleep debt - how to tell which one is flattening you at 3pm.
Magnesium forms explained: citrate, glycinate, threonate
Same mineral, very different effects. Which form helps sleep, which helps cramps, and which is a waste of money.
How often should you actually test your blood?
The panels worth tracking, the ones that rarely change, and a realistic testing cadence for non-athletes.
Vitamin D dosing: why one size fits all fails
Latitude, skin tone, body weight and sun habits change your need several-fold. How to find your dose.
Iron without the side effects: a practical guide
Why iron supplements upset your gut, who actually needs them, and the timing tricks that double absorption.