During subgroup analysis , a more beneficial effect of magnesium supplementation was observed in diabetic subjects with hypomagnesaemia .
CONCLUSIONS Magnesium supplementation can produce a favourable effect on FPG , HDL , LDL , TG and SBP .
BACKGROUND Cardiovascular disorders remain the leading cause of death in type 2 diabetic patients .
In the present study , a systematic review and a meta- analysis of r and omised controlled trials ( RCTs ) were conducted aim ing to evaluate the effect of magnesium supplementation on  type 2 diabetes ( T2D ) associated cardiovascular risk factors in both diabetic and nondiabetic individuals .
Oral magnesium supplementation in insulin-requiring Type 2 diabetic patients.
Oral magnesium ( Mg ) supplementation can improve insulin sensitivity and secretion in patients with Type 2 diabetes mellitus ( DM ) . We studied the effect of Mg supplementation on glycaemic control , blood pressure , and plasma lipids in insulin-requiring patients with Type 2 DM . Fifty moderately controlled patients were r and omized to 15 mmol Mg or placebo daily for 3 months . Plasma Mg , glucose , HbA1c , lipids , erythrocyte Mg , Mg and glucose concentrations in 24-h urine , and systolic and diastolic pressure were measured before and after 3 months treatment . Plasma Mg concentration was higher after supplementation than after placebo ( 0.82 + /- 0.07 vs 0.78 + /- 0.08 mmol l(-1 ) , p < 0.05 ) , as was Mg excretion ( 5.5 + /- 1.9 vs 3.7 + /- 1.4 mmol 24 h(-1 ) , p = 0.004 ) but erythrocyte Mg concentrations were similar . No significant differences were found in glycaemic control ( glucose : 10.7 + /- 3.8 vs 11.6 + /- 6.2 mmol l(-1 ) , p = 0.8 ; HbA1c : 8.9 + /- 1.6 vs 9.1 + /- 1.2 % , p = 0.8 ) , lipids or blood pressure . On-treatment analysis ( 34 patients : 18 on Mg , 16 on placebo ) yielded similar results . An increase in plasma Mg concentration irrespective of medication was associated with a tendency to a decrease in diastolic pressure ( increased plasma Mg vs no increase : -4.0 + /- 10.1 vs + 2.5 + /- 12.0 mmHg , p = 0.059 ) . Three months ' oral Mg supplementation of insulin-requiring patients with Type 2 DM increased plasma Mg concentration and urinary Mg excretion but had no effect on glycaemic control or plasma lipid concentrations
During subgroup analysis , a more beneficial effect of magnesium supplementation was observed in diabetic subjects with hypomagnesaemia .
CONCLUSIONS Magnesium supplementation can produce a favourable effect on FPG , HDL , LDL , TG and SBP .
BACKGROUND Cardiovascular disorders remain the leading cause of death in type 2 diabetic patients .
In the present study , a systematic review and a meta- analysis of r and omised controlled trials ( RCTs ) were conducted aim ing to evaluate the effect of magnesium supplementation on  type 2 diabetes ( T2D ) associated cardiovascular risk factors in both diabetic and nondiabetic individuals .