Lettuce is an important leafy vegetable with many health benefits, yet often overlooked. It’s a popular choice for salads and comes in diverse types. As it’s consumed raw, it retains high nutritional value. Per 100g, lettuce has 17 Kcal, 0.58g protein, 3.29g carbs, 0.30g fat, 2.1mg fiber, 33mg calcium, and 0.97mg iron.