Powering Plant-Based Prevention: Nutritional and Clinical Benefits of Plant-Based Diets in Chronic Disease

Authors

• Kaitlyn D. Johnson, University of LynchburgFollow

Specialty

physician assistant (PA-C)

Advisor

Thomas Colletti

Abstract

Plant-based diets (PBDs) have gained increasing attention for their role in chronic disease prevention and management. This manuscript synthesizes evidence from observational cohorts, randomized controlled trials, and systematic reviews to evaluate the nutritional adequacy, cardiometabolic effects, and clinical implications of well-planned PBDs. Evidence from these study designs demonstrates that vegetarian and vegan diets are associated with improvements in body weight, lipid profiles, glycemic control, and markers of systemic inflammation, as well as reduced long-term risk of type 2 diabetes, cardiovascular disease, and all-cause mortality. When appropriately planned, PBDs are safe, nutritionally adequate, and suitable across the lifespan. Despite this growing evidence base, adoption remains limited due to clinician knowledge gaps, low confidence in nutrition counseling, and cultural, accessibility, and affordability barriers. Research limitations - including inconsistent diet definitions, reliance on self-reported intake, underrepresentation of diverse populations, and scarcity of long-term randomized trials - underscore the need for greater methodological standardization and broader population representation. Overall, PBDs represent an evidence-based approach to reducing cardiometabolic risk, and integrating structured PBD education into medical training and clinical practice can strengthen clinician confidence, improve patient outcomes, and support broader implementation of effective dietary strategies.

Recommended Citation

Johnson KD. Powering Plant-Based Prevention: Nutritional and Clinical Benefits of Plant-Based Diets in Chronic Disease. University of Lynchburg DMSc Doctoral Project Assignment Repository. 2026; 8(1).