Lettuce is an annual plant of the daisy family, Asteraceae. It is most often grown as a leaf vegetable, but sometimes for its stem and seeds. Lettuce is most often used for salads, although it is also seen in other kinds of food, such as soups, sandwiches and wraps; it can also be grilled.

Lettuce is a source of vitamin K, which helps strengthen bones. Hydration. Water makes up over 95% of raw lettuce. Improved Vision. Lettuce is a source of vitamin A, which plays a role in eye health. Improved Sleep. Extracts of multiple lettuce types have also been shown to promote sleep

To store a full head of lettuce, wrap in a damp paper towel and put the head inside a plastic bag. Store in the refrigerator. If you're storing individual lettuce leaves, spin them dry after washing and place in a lettuce keeper in the fridge. A container is best to avoid bruising and bacteria buildup.