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Usefulness of Vegetarian and Vegan Diets for Treating Type 2 Diabetes


Significant benefits for diabetes prevention and management have been observed with vegetarian and especially vegan diets. This article reviews observational studies and intervention trials on such diets, and discusses their efficacy, nutritional adequacy, acceptability, and sustainability. Research to date has demonstrated that a low-fat, plant-based nutritional approach improves control of weight, glycemia, and cardiovascular risk. These studies have also shown that carefully planned vegan diets can be more nutritious than diets based on more conventional diet guidelines, with an acceptability that is comparable with that of other therapeutic regimens. Current intervention guidelines from professional organizations offer support for this approach. Vegetarian and vegan diets present potential advantages in managing type 2 diabetes that merit the attention of individuals with diabetes and their caregivers.

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Papers of particular interest, published recently, have been highlighted as: • Of importance •• Of major importance

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The authors wish to acknowledge Heather J. Katcher, PhD, RD, for her helpful review and editing of the manuscript.


No potential conflicts of interest relevant to this article were reported.

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Correspondence to Caroline B. Trapp.

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Trapp, C.B., Barnard, N.D. Usefulness of Vegetarian and Vegan Diets for Treating Type 2 Diabetes. Curr Diab Rep 10, 152–158 (2010).

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  • Vegetarian diet
  • Vegan diet
  • Type 2 diabetes