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Hypoglycemia, also called low blood sugar or low blood glucose, is a blood-sugar level below 70 mg/dL (3.9 mmol/L). [3] [5] Blood-sugar levels naturally fluctuate throughout the day, the body normally maintaining levels between 70 and 110 mg/dL (3.9–6.1 mmol/L).
The fluctuation of blood sugar (red) and the sugar-lowering hormone insulin (blue) in humans during the course of a day with three meals. One of the effects of a sugar-rich vs a starch-rich meal is highlighted. [1] The blood sugar level, blood sugar concentration, blood glucose level, or glycemia is the measure of glucose concentrated in the blood.
Hyperglycemia also creates microbiological changes within the body: hyperglycemia can lead to rapid changes in blood pH and cell viscosity, weakening the cells and making it more conducive for infectious agents to thrive and dampen inflammatory responses. This is because hyperglycemia impacts a few factors such as microenvironment of immune ...
Hypoglycemia awareness; In older patients, clinical practice guidelines by the American Geriatrics Society recommend, in frail patients who have a life expectancy of less than 5 years, a target a Hb A1c of 8% is appropriate as the risk of very low blood sugar outweighs the long term benefits of a lower A1c. [16]
[20] [21] Decrements in insulin, increments in glucagon, and, absent the latter, increments in epinephrine are the primary glucose counterregulatory factors that normally prevent or (more or less rapidly) correct hypoglycemia. In insulin-deficient diabetes (exogenous) insulin levels do not decrease as glucose levels fall, and the combination of ...
Recurrent mild hypoglycemia may fit a reactive hypoglycemia pattern, but this is also the peak age for idiopathic postprandial syndrome, and recurrent "spells" in this age group can be traced to orthostatic hypotension or hyperventilation as often as demonstrable hypoglycemia. [citation needed] Insulin-induced hypoglycemia
Glucose testing can be used to diagnose or indicate certain medical conditions. [citation needed]High blood sugar may indicate . gestational diabetes.This temporary form of diabetes appears during pregnancy, and with glucose-controlling medication or insulin symptoms can be improved.
In the elderly, hypoglycemia can produce focal stroke-like effects or a hard-to-define malaise. [medical citation needed] The symptoms of a single person do tend to be similar from episode to episode. In the large majority of cases, hypoglycemia severe enough to cause seizures or unconsciousness can be reversed without obvious harm to the brain.
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