This meta- analysis suggests that vitamin D supplementation improves indices of glycemic control ( FBG , HOMA-IR , and HbA1C ) in patients with diabetes mellitus .
Hence , vitamin D supplements may be of potential therapeutic value in diabetic patients , as an adjuvant therapy along with other treatments
BACKGROUND AND PURPOSE This systematic review and meta- analysis aim ed to assess the effects of vitamin D supplements on indices of glycemic control [ homeostatic model assessment -insulin resistance ( HOMA-IR ) , hemoglobin A1C ( HbA1C ) , fasting blood glucose ( FBG ) , and quantitative insulin-sensitivity check index ( QUICKI ) and lipid profile in diabetic patients .
Daily consumption of vitamin D- or vitamin D + calcium-fortified yogurt drink improved glycemic control in patients with type 2 diabetes: a randomized clinical trial.
BACKGROUND Low serum concentrations of 25-hydroxyvitamin D [ 25(OH)D ] have been associated with impaired glucose tolerance and diabetes . OBJECTIVE This study aim ed to compare the effects of daily intake of vitamin D- or vitamin D(3 ) + calcium-fortified yogurt drink on glycemic status in subjects with type 2 diabetes ( T2D ) . DESIGN Ninety diabetic subjects were r and omly allocated to 3 groups to consume plain yogurt drink ( PY ; containing no vitamin D and 150 mg Ca/250 mL ) , vitamin D-fortified yogurt drink ( DY ; containing 500 IU vitamin D(3 ) and 150 mg Ca/250 mL ) , or vitamin D + calcium-fortified yogurt drink ( DCY ; containing 500 IU vitamin D(3 ) and 250 mg Ca/250 mL ) twice per day for 12 wk . Fasting serum glucose ( FSG ) , glycated hemoglobin ( Hb A(1c ) ) , homeostasis model assessment of insulin resistance ( HOMA-IR ) , serum lipid profile , and percentage fat mass ( FM ) were assessed before ( baseline ) and after the intervention . RESULTS In both the DY and DCY groups , mean serum 25(OH)D(3 ) improved ( + 32.8 ± 28.4 and + 28.8 ± 16.1 nmol/L , respectively ; P < 0.001 for both ) , but FSG [ -12.9 ± 33.7 mg/dL ( P = 0.015 ) and -9.6 ± 46.9 mg/dL ( P = 0.035 ) ] , Hb A(1c ) [ -0.4 ± 1.2 % ( P < 0.001 ) and -0.4 ± 1.9 % ( P < 0.001 ) ] , HOMA-IR [ -0.6 ± 1.4 ( P = 0.001 ) and -0.6 ± 3.2 ( P < 0.001 ) ] , waist circumference ( -3.6 ± 2.7 and -2.9 ± 3.3 ; P < 0.001 for both ) , and body mass index [ in kg/m(2 ) ; -0.9 ± 0.6 ( P < 0.001 ) and -0.4 ± 0.7 ( P = 0.005 ) ] decreased significantly more than in the PY group . An inverse correlation was observed between changes in serum 25(OH)D(3 ) and FSG ( r = -0.208 , P = 0.049 ) , FM ( r = -0.219 , P = 0.038 ) , and HOMA-IR ( r = -0.219 , P = 0.005 ) . CONCLUSION Daily intake of a vitamin D-fortified yogurt drink , either with or without added calcium , improved glycemic status  in T2D patients . This trial was registered at clinical trials.gov as NCT01229891
This meta- analysis suggests that vitamin D supplementation improves indices of glycemic control ( FBG , HOMA-IR , and HbA1C ) in patients with diabetes mellitus .
Hence , vitamin D supplements may be of potential therapeutic value in diabetic patients , as an adjuvant therapy along with other treatments
BACKGROUND AND PURPOSE This systematic review and meta- analysis aim ed to assess the effects of vitamin D supplements on indices of glycemic control [ homeostatic model assessment -insulin resistance ( HOMA-IR ) , hemoglobin A1C ( HbA1C ) , fasting blood glucose ( FBG ) , and quantitative insulin-sensitivity check index ( QUICKI ) and lipid profile in diabetic patients .