Eating bananas on an empty stomach will not achieve the therapeutic effect of laxative. Under normal circumstances, the human body consumes bananas about 1 hour after meals in order to better play its laxative effect. Because after food enters the digestive tract, it needs to go through a series of processes such as decomposition, transformation and absorption to produce and metabolize substances, and the whole digestion process takes about one hour. When the body produces metabolic substances, the water-soluble dietary fiber in bananas can promote the excretion of excretion in the body by lubricating the intestinal mucosa and softening metabolites. In addition, excessive consumption of bananas on an empty stomach can also cause adverse effects on the human digestive tract. Because bananas are rich in potassium, magnesium, zinc and other minerals, it plays a role in promoting the circulation of the blood system of the stomach, which will not only lead to increased hunger, but also cause stomach pain, acid reflux, nausea and other adverse reactions.