Causes of hypomagnesaemia and hypermagnesaemia (magnesium) are?

Hypo =  Crohn’s disease, diarrhoea, over 70s, diabetes, liver disease, Loop diuretics (such as frusemide), alcohol dependence hyper = Renal disease, renal failure, hypothyroidism, Addison's disease, drugs containing magnesium, such as some laxatives and antacids