A magnesium blood test measures the amount of magnesium, an important mineral, in your blood. Your body needs magnesium from your diet to help your muscles, nerves, heart, and immune system work ...

Exhausted? Irritable? Constantly fighting off headaches? You could be dealing with symptoms of a magnesium deficiency and not ...

DEAR DR. ROACH: I recently read in your column that you test your patient’s magnesium levels when they have been on long-term proton-pump inhibitors (PPIs). When I asked my doctor to include this in ...