Diet is one of the most important ways of controlling diabetes beside medications and exercises. In the present study, equal prevalence of borderline cases in vegetarians (24.0%) and non-vegetarians (24.1%). Total diabetic subjects were more in the vegetarians (10.1%) than non-vegetarians (7.5%). Statistically non-significant (p>0.05) relationship had been found between vegetarians/non-vegetarians and type 2 diabetes. A vegetarian diet can cause diabetes if it contains too many calories and not enough important nutrients. A carefully planned healthful and nutritionally sound vegetarian diet should include essential nutrients which can lower risk of type II diabetes and other health problems like obesity, coronary heart disease, high blood pressure and some forms of cancer than non-vegetarians.