Systematic review and meta-analyses of vitamin E (alpha-tocopherol) supplementation and blood lipid parameters in patients with diabetes mellitus.

BACKGROUND AND AIMS: The studies have shown that α-tocopherol supplementation could improve lipid profile in diabetes mellitus (DM) patients. Nonetheless, the result remains inconsistent. Therefore, this meta-analysis was performed to evaluate the efficacy of α-tocopherol supplement on lipid parameters in DM patients. METHODS: We conducted an extensive search via Cochrane Library, PubMed, Scopus, and Web of Science databases to acquire the reported RCTs up to October 2020. RESULTS: The results showed no effects of α-tocopherol supplementation on lipid profile in DM patients except when used ≥12 weeks. CONCLUSIONS: α-tocopherol supplementation in DM patients had no significant effect on lipid profiles.