Improvements in Cardiometabolic Effects and Body Composition Outcomes Following an Online 8-Week Plant-Based Dietary and Lifestyle Worksite Intervention

Abstract

Plant-based diets may positively impact body composition and cardiometabolic risk factors. An online 8-week plant-based dietary and lifestyle worksite intervention was implemented in spring 2021 among staff ( n = 52) at a public university in the southwestern United States. Participants attended weekly online small group counseling sessions and healthy living workshops with cooking classes. All measures and fasting blood draws were completed at baseline and 8-week post-intervention with changes analyzed using paired sample t-tests. Multiple linear regressions examined associations among knowledge gained and online attendance with outcomes. Results from paired sample t-tests indicated numerous statistically significant improvements from baseline to 8-week post-intervention: total cholesterol (mg/dL) (MBL = 193 ± 39, MPI = 176 ± 36), low-density lipoprotein cholesterol (LDL-C) (mg/dL) (MBL = 110 ± 33, MPI = 98 ± 30), body mass index (BMI) (kg/m2) (MBL = 26.3 ± 6.3, MPI = 25.9 ± 6.1), fat mass (lb) (MBL = 62.0 ± 29.4, MPI = 60.3 ± 28.4), fat-free mass (lb) (MBL = 104.1 ± 29.4, MPI = 102.4 ± 19.6), phase angle (MBL = 5.1 ± .6, MPI = 5.0 ± .6), and diet quality (MBL = 62.4 ± 12.5, MPI = 75.2 ± 10.3). High-density lipoprotein cholestero l(HDL-C) decreased significantly (MBL = 65 ± 18, MPI = 61 ± 18). Knowledge negatively predicted LDL-C (B = −.226, P = .048) and positively predicted diet quality (B = .155, P = .021). Attendance at group sessions positively predicted phase angle (B = .055, P = .038). Findings demonstrate how a plant-based lifestyle can improve cardiometabolic health by reducing risk factors for chronic disease and enhancing body composition. Clinicians can support patients by encouraging plant-based diets.