Fasting can eat cinnamon, cinnamon is rich in sugar, can supplement human nutrition, cinnamon is a hot food to eat more fire, fasting can eat cinnamon but do not eat too much at a time, too much on the human body has an impact. If the patient has gastrointestinal disorders, it is best not to eat on an empty stomach, eating cinnamon on an empty stomach will increase the burden on the gastrointestinal tract, gastrointestinal tract stimulation caused by pain, and even cause nausea, vomiting and other symptoms, it is best to eat something before eating or control the total amount, do not eat too much at a time. If the symptoms of stomach discomfort are more serious, you need to go to the hospital in time to take appropriate measures for treatment.