The brain is very sensitive to low blood sugar. Hypoglycemia usually occurs in people with diabetes when their dose of insulin or glucose-lowering medicine is too much for the amount of food they have eaten. Too much glucose is removed from the blood and the body gets hypoglycemic symptoms. This is treated by eating or drinking something with sugar in it, like candy or orange juice. Hypoglycemia can occur in people who don't have diabetes, and may be related to an endocrine or liver condition.
Treatment includes eating balanced, frequent meals.
It would be a good idea to take your daughter to her doctor to find the cause of her fainting. A person faints when the brain does not get enough oxygen or nutrients. The cause may be related to low blood sugar, anemia or a heart or brain condition. 882-7000 to make an appointment with a University of Missouri Health Sciences Center physician. I diabetes for three and one-half years, and my blood sugar control has been excellent.