Legumes Legumes are plants that grow seeds (fruit) inside pods, such as beans, peas, and lentils. Legumes are great sources of fat, protein and carbohydrates. Related Articles: Advice for People Newly Diagnosed with DiabetesBeyond Counting Carbs for People with Type 1 DiabetesMore Thoughts on the Mediterranean DietAll About the Keto Diet 5 Tips to Take from the Mediterranean Diet