This makes sense when you consider the role that magnesium has in the body - it's involved in a lot of reactions, either directly or as a cofactor. In fact, AT

This makes sense when you consider the role that magnesium has in the body - it's involved in a lot of reactions, either directly or as a cofactor. In fact, ATP exists typically as MG-ATP in the body. Severe Deficiency is rare (or rarely diagnosed i should say) because the body maintains serum magnesium levels at the expense of skeletal mg.