Sure, you could try improving your magnesium absorption by reducing or avoiding calcium-rich foods two hours before or after eating magnesium-rich foods. Also, avoid high-dose zinc supplements, get plenty of vitamin D, eat raw veggies, and quit smoking if you do.
Also, don't eat magnesium rich foods with an excessively fatty meal. If you want to absorb it. Rabbit studies showed that.
And d-ribose paired with magnesium is really effective. So is topical magnesium oil.
And, finally, magnesium spares potassium, potassium spares calcium, and taurine is synthesized properly when you have enough of it. But consuming taurine can help buffer against symptoms of magnesium deficiency.
Because I know this and a few more things, he lives.