Dizziness after eating may be caused by overeating, which makes the blood flow to the digestive tract, resulting in a relative lack of blood supply to the brain tissue; secondly, eating too greasy, etc., will make the blood sticky and interfere with the blood flow rate, thus affecting the blood supply to the brain tissue, and all of the above factors can lead to the symptoms of dizziness after eating. In addition, dizziness after eating may also be the precursor of some diseases, such as cerebrovascular disease, heart disease, cervical spine disease, etc. 1, cerebrovascular disease: If dizziness suddenly appears during meals, accompanied by nausea and vomiting, and there is the phenomenon of limb movement, it may be the precursor of cerebrovascular disease; 2, heart disease: If patients have coronary heart disease, heart valve disease, chronic heart failure and other heart-based diseases, after a full meal After the heart will lead to an increased burden on the heart, so that the heart ejects less blood, resulting in insufficient blood supply to the brain, so that patients appear dizzy symptoms; 3, cervical spine disease: commonly include vertebral artery cervical spondylosis, due to frequent head down when eating, so that the cervical spine compression of the surrounding blood vessels lead to a reduction in blood supply to the head, resulting in nausea, vomiting, dizziness and other symptoms. If the patient has not been improved after eating dizziness, need to promptly go to the hospital to do brain CT and other tests to check the disease factors, but do not have to worry about excessive tension, usually pay attention to regular diet, avoid overeating, prevent too hungry and too full.