Generally speaking, drinking too much barley tea will not cause cancer.
Barley tea is a kind of refreshing drink brewed from fried yellow barley. Since this drink does not contain any carcinogenic substances, it is not carcinogenic even if people drink too much of it. Moreover, barley is rich in polyunsaturated fatty acids, carbohydrates, crude fiber, proanthocyanidins and other nutrients, which are good for maintaining human life activities.
However, although barley tea is good, but it is not recommended to drink a lot of it, because there is a risk of gastrointestinal stimulation, which may cause bloating, abdominal pain, diarrhea and other discomforts, this situation is especially obvious for people with gastrointestinal discomfort. In addition, it is not advisable to drink barley tea on an empty stomach, or drink overnight barley tea. For those who already have gastrointestinal discomfort, go to the hospital in time.