In November 2019 researchers from Spain published their review of the dietary patterns which have been most widely studied for the management of diabetes type 2 and its complications. The diets, which have a high consumption of fruits, vegetables, whole grains, legumes, nuts, and seeds, together with a minimal consumption of animal products, ie vegetarian, vegan, Mediterranean, and DASH (Dietary Approaches to Stop Hypertension) diets, appear to have a beneficial effect on glycaemic control in different diabetic populations. However, the limited evidence on diabetes type 2 related complications makes it difficult to draw a firm conclusion.
Salas-Salvadó J et al. Dietary Patterns Emphasizing the Consumption of Plant Foods in the Management of Type 2 Diabetes: A Narrative Review. Adv Nutr. 2019 Nov 1;10(Supplement 4):S320-S331.