Here is the answer to this question. First of all, leeks can be a good flavor, but also rich in nutrients, leeks of the main nutrients are vitamin C, rich in fiber, can promote intestinal peristalsis, prevention of colorectal diseases, leeks have a lot of effects on the human body, the following to introduce you to the efficacy of leeks and their role.

To replenish the kidneys and warm the sun: leeks are warm and taste more pungent, leeks contain zinc, zinc can promote the development of the male reproductive organs, and at the same time can be warmed up the sperm, with the role of replenishment of the kidneys to start the sun.

Beneficial to the liver and stomach: leek contains volatile essential oils and sulfides and other special ingredients, can emit a unique pungent odor, which helps to regulate liver qi, improve appetite, enhance digestive function, and play the role of beneficial to the liver and stomach.

Laxative: Leek has the effect of warming and strengthening the stomach. Leek contains a lot of vitamins and crude fiber, fiber can enhance gastrointestinal motility, to treat constipation and prevent intestinal cancer.

Bactericidal anti-inflammatory: leeks are rich in a large number of sulfur compounds, sulfur compounds are able to play a certain bactericidal anti-inflammatory role for Pseudomonas aeruginosa, dysentery, typhoid fever, Escherichia coli and Staphylococcus aureus and other bacteria can play a certain role in inhibiting colds and flu when eating leeks can be a certain effect.

I hope my answer can help friends in need.