Dizziness when hungry is usually caused by hypoglycemia due to lack of sugar in the body, but other causes of dizziness cannot be excluded. The lack of glucose during hunger can lead to hypoglycemia, which can lead to a lack of oxygen supply to the brain, resulting in dizziness. However, sometimes the possibility of low blood pressure cannot be ruled out. This is also the time when blood pressure needs to be measured. Some women also experience dizziness when they are hungry due to changes in their hormone levels and the high energy consumption required when they are menstruating. Some people have poor digestive function, resulting in the stomach and small intestine not working properly and not being able to completely convert food into the nutrients needed by the body, which can also lead to dizziness when hungry. If the dizziness occurs during adolescence, it is usually due to increased demand for food as a result of physical development, which can lead to this condition. In addition, dehydration due to certain diseases, side effects from antidepressants, anti-allergy medications, anti-seizure medications, etc. can also cause dizziness when hungry. In short, there are many reasons for dizziness when hungry, and it is necessary to go to the hospital for a timely examination to clarify the cause.