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The alleged mechanism for the feeling of a crash is correlated with an abnormally rapid rise in blood glucose after eating. This normally leads to insulin secretion (known as an insulin spike ), which in turn initiates rapid glucose uptake by tissues, either storing it as glycogen or fat , or using it for energy production.
Feeling lightheaded can also be a sign of low blood sugar, Dr. Shaikh says. This happens because the brain isn’t getting enough glucose, which the brain needs for energy.
Hyperglycemia (again, high blood sugar) can also indirectly cause dizziness through dehydration. If you’re peeing often and don’t replace those fluids, it could cause you to feel lightheaded.
Lightheadedness is a common and typically unpleasant sensation of dizziness [1] or a feeling that one may faint. The sensation of lightheadedness can be short-lived, prolonged, or, rarely, recurring. In addition to dizziness, the individual may feel as though their head is weightless.
Improvement in blood sugar level and symptoms is expected to occur in 15–20 minutes, at which point blood sugar is measured again. [3] [2] If the repeat blood sugar level is not above 70 mg/dL (3.9 mmol/L), the hypoglycemic should consume another 10–20 grams of a carbohydrate and with remeasurement of blood sugar levels after 15–20 minutes.
If you stand up too quickly and start to feel light headed, it's caused by a drop in blood pressure in your head and upper body. It's the same reason fighter pilots black out in high G turns, and ...
While feeling unwell, Start with regular monitoring of blood glucose levels. In addition to measuring blood or urine ketone concentrations twice a day and more. In case there are ketones, insulin doses should be increased. Patients are also advised to focus on dehydration and go to the hospital in case of frequent vomiting.
The cells release the glucose into the bloodstream, increasing blood sugar levels. Hypoglycemia, the state of having low blood sugar, is treated by restoring the blood glucose level to normal by the ingestion or administration of dextrose or carbohydrate foods. It is often self-diagnosed and self-medicated orally by the ingestion of balanced meals.