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Abstract
Background
Prediabetes and type 2 Diabetes Mellitus (T2DM) are characterized by increased blood sugar concentration and insulin resistance. Although there are only a few reports of potential benefits of flaxseed’s consumption on different metabolic parameters, there is no evidence of its effect among people with these conditions.
ObjectivesThe present systematic review and meta-analysis aimed to assess the effect of flaxseed supplementation on glycemic control variables and insulin resistance in prediabetes and T2DM.
MethodsA literature search was conducted through PubMed, Cochrane Central Register of Controlled Trials (CENTRAL), and Web of Science, to identify Randomized Control Trials (RCTs) that evaluated the effect of milled or ground flaxseed supplementation on fasting blood glucose, HbA1c, insulin concentrations, or HOMA-IR. The data were analyzed using Comprehensive Meta-Analysis (CMA) software version 3.3 in a fixed-effect model.
ResultsSeven studies were included in the systematic review and the meta-analysis, the results showed a significant reduction on fasting blood sugar (SMD: −0.392, 95% CI: −0.596, −0.187, p = <0.001, I
Flaxseed supplementation seems to improve glycemic control variables and insulin resistance in prediabetes and T2DM; however, more RCTs are needed to have more decisive evidence about doses, method of supplementation, and the possible effect of synergy with the dietetic treatment.
Details
1 Institute of Research in Biomedical Sciences (IICB), University Center for Health Sciences (CUCS), University of Guadalajara, 950 Sierra Mojada, ZC 44340 Guadalajara, Jalisco, Mexico; Translational Nutritional Sciences, University Center for Health Sciences (CUCS), University of Guadalajara, 950 Sierra Mojada, ZC 44340 Guadalajara, Jalisco México Guadalajara, Mexico
2 Department of Public Health, University Center for Health Sciences (CUCS) University of Guadalajara, 950 Sierra Mojada, ZC 44340 Guadalajara, Jalisco, Mexico
3 Translational Nutritional Sciences, University Center for Health Sciences (CUCS), University of Guadalajara, 950 Sierra Mojada, ZC 44340 Guadalajara, Jalisco México Guadalajara, Mexico; Department of Public Health, University Center for Health Sciences (CUCS) University of Guadalajara, 950 Sierra Mojada, ZC 44340 Guadalajara, Jalisco, Mexico
4 Department of Health and Disease, University Center of Tonala (CUT), University of Guadalajara, 555 Nuevo Periferico, ZC 45425 Tonala, Jalisco, Mexico
5 Institute of Research in Biomedical Sciences (IICB), University Center for Health Sciences (CUCS), University of Guadalajara, 950 Sierra Mojada, ZC 44340 Guadalajara, Jalisco, Mexico
6 Translational Nutritional Sciences, University Center for Health Sciences (CUCS), University of Guadalajara, 950 Sierra Mojada, ZC 44340 Guadalajara, Jalisco México Guadalajara, Mexico
7 Institute of Research in Biomedical Sciences (IICB), University Center for Health Sciences (CUCS), University of Guadalajara, 950 Sierra Mojada, ZC 44340 Guadalajara, Jalisco, Mexico; Translational Nutritional Sciences, University Center for Health Sciences (CUCS), University of Guadalajara, 950 Sierra Mojada, ZC 44340 Guadalajara, Jalisco México Guadalajara, Mexico; Department of Public Health, University Center for Health Sciences (CUCS) University of Guadalajara, 950 Sierra Mojada, ZC 44340 Guadalajara, Jalisco, Mexico