Symptom: Hypoglycemia
(Low Blood Sugar)

    Hypoglycemia (low blood sugar) is a commonly perceived problem. In actuality, while some or many of the symptoms may be present, it is rarely confirmed or documented. The presence of true, documented hypoglycemia in the absence of diabetes treatment must be evaluated comprehensively by an endocrinologist. Hypoglycemia most often affects those at the extremes of age, such as infants and the elderly, but may happen at any age. Generally, hypoglycemia is defined as a serum glucose level (the amount of sugar or glucose in your blood) below 70 mg/dL. As a medical problem, hypoglycemia is diagnosed by the presence of three key features (known as Whipple's triad). Whipple's triad is:
  • symptoms consistent with hypoglycemia,
  • a low plasma glucose concentration, and
  • relief of symptoms after the plasma glucose level is raised.
  • Symptoms of hypoglycemia typically appear at levels below 60 mg/dL. Some people may feel symptoms above this level. Levels below 50 mg/dL affect brain function. The body regulates its glucose level—the primary source of energy for the brain, muscles, and other essential cells - by the actions of different hormones. These hormones include insulin (which lowers the blood sugar level) and other chemicals which raise blood sugar (such as glucagon, growth hormone, and epinephrine).
  • Both insulin and glucagon are manufactured in the pancreas, an organ near the stomach which assists the digestive tract. Special cells in the pancreas, called beta cells, make insulin. Alpha cells in the pancreas make glucagon.
  • The role of insulin is to help in the absorption of glucose from the blood by causing it to be stored in the liver or be transported into other tissues of the body (for metabolism or storage).
  • Glucagon increases the amount of glucose in the blood by breaking down stored glucose (starch, called glycogen) and releasing it from the liver into the bloodstream.
  • Insulin and glucagon are usually correctly balanced if the liver and pancreas are functioning normally.
  • Traditionally considered a stress hormone, epinephrine (or adrenalin) is made in the adrenal gland and in certain cells in the central nervous system. Epinephrine also elevates blood glucose levels by making glucose available for the body during a time of stress. When this mechanism is not working properly, hypoglycemia can result. Other hormones also help in raising the level of blood glucose, like cortisol made by the adrenal gland and growth hormone made by the pituitary gland.

    Source: http://www.emedicinehealth.com

    1 23...Next»(Page 1 of 13)GlossaryLow Blood Sugar (Hypoglycemia) Topic Guide Must Read Articles Related to Low Blood Sugar (Hypoglycemia) Alcohol Intoxication Alcohol intoxication is defined as when the quantity of alcohol the person consumes produces behavioral or physical abnormalities. Alcohol is the generic ...learn more >> Diabetic Ketoacidosis Diabetic ketoacidosis (DKA) occurs when a person with diabetes becomes dehydrated. Causes of diabetic ketoacidosis include infection, missed insulin, or newly d...learn more >> Epilepsy Epilepsy is a condition in which a person has recurrent seizures. A seizure is defined as an abnormal, disorderly discharging of the brain's nerve cells, result...learn more >> See the Entire Low Blood Sugar (Hypoglycemia) Topic Guide » Patient Comments & Reviews The eMedicineHealth doctors ask about Hypoglycemia (Low Blood Sugar): Hypoglycemia - Effective Treatments What kinds of treatments have been effective for your hypoglycemia? 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