The consequent fall in blood glucose is indicated as the reason for the "sugar crash". This normally leads to insulin secretion (known as an insulin spike), which in turn initiates rapid glucose uptake by tissues either accumulating it as glycogen or utilizing it for energy production. The alleged mechanism for the feeling of a crash is correlated with an abnormally rapid rise in blood glucose after eating. It is variously described as a sense of tiredness, lethargy, irritation, or hangover, although the effects can be less if one has undertaken a lot of physical activity within the next few hours after consumption. The condition is related to homeostatic systems utilised by the body to control blood sugar levels. Reactive hypoglycemia, postprandial hypoglycemia, or sugar crash is a term describing recurrent episodes of symptomatic hypoglycemia occurring within 4 hours after a high carbohydrate meal in people who do not have diabetes. Hypoglycemia is a condition where blood glucose levels fa When the insulin levels outweigh the blood glucose, hypoglycemia can set in. Raised insulin levels should not cause any symptoms as long as there is a corresponding amount of glucose in the blood. Prolonged strenuous exercise may cause insulin levels to spike, as well as certain illnesses, such as hyperinsulinism. Consuming large amounts of simple carbohydrates will quickly cause insulin levels to spike in response to the rise in blood glucose. The body absorbs and processes simple carbohydrates, such as sugar, very quickly, making blood glucose levels rise sharply and quickly. Complex carbohydrates, such as whole grains, take awhile for the body to absorb, resulting in stable blood glucose and insulin levels. There are two different types of carbohydrates - simple and complex - and each one has a vastly different effect on blood glucose levels and insulin production. Carbohydrates are the body’s main source of blood glucose. The pancreas constantly monitors blood glucose levels and produces appropriate amounts of insulin to keep glucose levels in the normal range of 70 to 130 mg/dL, and up to 180 mg/dL after eating a meal. Any time blood glucose levels rise, such as after consuming carbohydrates, the pancreas secretes additional insulin to counteract it. Video of the Day Insulin is a hormone produced by the pancreas that allows the body’s cells to utilize blood glucose as energy. If something goes wrong and the insulin levels stay high, it can cause symptoms of dizziness before quickly becoming a medical emergency. In a healthy person, the insulin spikes, does its job and the levels return to normal. Spikes in insulin production are a normal function of the endocrine system that usually occur after eating.
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