Know what your body runs on.
Honest notes from 2 authors on vitamins, energy, sleep and blood testing. Studies and doses, not hype.
Iron deficiency without anemia fatigue: The clinical evidence
Are you exhausted but your standard blood panel came back normal? Here is the clinical evidence on iron deficiency without anemia and fatigue.
Vitamin D and Athletic Performance: The Magnesium Trap
Why blind-dosing high-dose vitamin D3 might be ruining your recovery, depleting your magnesium, and causing muscle cramps.
Most Common Nutrient Deficiencies in Europe: What the Science Shows
Think your diet covers your bases? Standardized data from 55,844 Europeans suggests otherwise. Elena Mara breaks down the real micronutrient gaps.
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.