β -carotene contained in lettuce leaves can be converted into vitamin A in small intestine. Vitamin A can protect the epidermis of the skin and make people's skin soft, shiny and elastic, so it is also called "cosmetic vitamin".

Rich in vitamin C can prevent the formation of carcinogenic nitrosamines. People who love coughing in autumn can eat lettuce leaves to relieve cough. Blanch lettuce leaves with boiling water to make noodles, which are not only delicious, but also nutritious.

Extended data

Generally speaking, the vitamin content in lettuce leaves is higher than that in stems, and the carotene content in leaves is dozens of times that in stems. Vitamin B 1 is twice as much as that in leaves, vitamin B2 is five times and vitamin C is three times. The content of nicotinic acid in leaves is not only higher than that in stems, but also has good antioxidant effect. In addition, leaves also contain a lot of calcium.

People's Health Network-Don't throw leaves when eating vegetables.

People's Network-Can lettuce leaves be eaten? Lettuce leaves are rich in vitamins.