Abstract:
Vitamin C is one of the important soluble vitamin that is widely used as supplementation and drug. It has been published about antioxidant effect that inhibits lipid peroxidation and improves lipid profile, especially increases HDL but the significant is not show clearly in many studies.
Objective: This study aims to assess the effect of vitamin C supplementation on HDL among DM type II patients.
Materials and Methods: In this randomized, controlled trial, a total of 116 patients were randomly assigned to vitamin C (n=58) or control groups (n=58). Patients in the vitamin C group consumed 1000 mg vitamin C and those in the control group were not given vitamin C every other day for 12 weeks. Fasting blood sugar (FBS), HbA1C, total cholesterol (CHOL), high density lipoprotein (HDL), low density lipoprotein (LDL), triglyceride (TG) and serum creatinine (Cr) were collected at baseline and at the end of the study to measure the changing in all profiles.
Result: There was no significant difference in the changing in FBS between groups (Vit C group +6.4 mg/dL, control group +1.3 mg/dL, p= 0.543). There was no significant difference in the changing in HbA1C between groups (Vit C group +0.7%, control group +0.3%, p= 0.050). There was no significant difference in the changing in CHOL between groups (Vit C group -1.3 mg/dL, control group -8.7 mg/dL, p= 0.285). There was no significant difference in the changing in HDL between groups (Vit C group +2.9 mg/dL, control group +3.6 mg/dL, p= 0.652). There was no significant difference in the changing in LDL between groups (Vit C group -0.5 mg/dL, control group -11.1 mg/dL, p= 0.093). There was no significant difference in the changing in TG between groups (Vit C group -9.5 mg/dL, control group -7.5 mg/dL, p= 0.887). And there was also no difference in the changing in Cr between groups (Vit C group 0.002 mg/dL, control group 0.024 mg/dL, p= 0.384).
Conclusion: Every day supplementation with 1000 mg vitamin C for 12 weeks doesnt increase serum HDL in DM type2 patients. Further studies are needed to assess the effect of vitamin C supplementation on HDL among DM type II patients.