Usually drinking honey water does not lead to severe headaches, but if you drink honey water headaches, usually the following factors: 1, taking honey water in excess or honey water concentration is too large, there will be a transient hypoglycemia, honey belongs to high fructose food, the body in fasting or a short time after eating a lot of honey, fructose can not be converted into glucose in a timely manner, and will stimulate the pancreas to secrete a lot of insulin, decomposition of blood sugar This can lead to the symptoms of “hypoglycemia”. This is especially true for patients with a history of diabetes, if you drink a lot of honey for a short period of time, it will cause a sudden drop in blood sugar and you will have a severe headache. 2. The situation will be reflexive dizziness and headache.