If you feel dizzy without eating staple food, the main considerations are hypoglycemia or insufficient cerebral blood supply due to insufficient intake of carbohydrates. 1. Hypoglycemia: Glucose is an essential substance in the body’s metabolic process, providing energy for tissues and organs. If you don’t eat staple food, the source of glucose will be reduced, which may lead to low blood sugar, resulting in symptoms such as dizziness and fatigue, and in serious cases, panic, sweating and even coma. 2. Insufficient blood supply to the brain: Commonly found in patients with anemia or weak physique, due to the body’s low blood volume and low hemoglobin content, not eating staple food may lead to insufficient blood and oxygen supply to the brain, thus inducing or aggravating the symptoms of dizziness. Through eating, the body can obtain the necessary nutrients and trace elements, so it is recommended to have a balanced diet and eat on time.