If you eat too many leeks, the disadvantages to your body are as follows: 1. It may cause spasm of the gastrointestinal tract, causing bloating and abdominal pain, because leeks are rich in dietary fiber, if too much intake, the mechanical stimulation of the intestines will be very obvious, which may cause spasm of the intestines and produce pain. 2. The intake of leeks is too much, it may aggravate the damp heat and false fire in the body, especially for patients with sores and eye diseases, when eating leeks must avoid excessive intake.