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Lettuce
Most Americans don’t get enough vitamins in their diets, and lettuce can help. A leafy green vegetable, lettuce is a low-fiber vegetable that is a good source of vitamins A, C, and K. Lettuce is also a good source of folate and potassium. While it doesn’t have a lot of fiber compared to other vegetables, lettuce is still a healthy choice for adding more vegetables to your diet.