Type 2 diabetes develops when the body becomes resistant to insulin or when the pancreas stops producing enough insulin. Exactly why this happens is unknown, although genetics and environmental factors, such as excess weight and inactivity, seem to be contributing factors.
Insulin is a hormone that comes from the gland situated behind and below the stomach (pancreas). The process is as follows: the pancreas secretes insulin into the bloodstream, the insulin circulates enabling sugar to enter the cells, insulin lowers the amount of sugar in the bloodstream and as the blood sugar level drops, so does the secretion of insulin from the pancreas.
Glucose (sugar) is a main source of energy for the cells that make up muscles and other tissues. This is the process: glucose comes from two major sources: food and the liver, sugar is absorbed into the bloodstream, where it enters cells with the help of insulin, and the liver stores and makes glucose and when the glucose levels are low, such as when you haven't eaten in a while, the liver breaks down stored glycogen into glucose to keep the glucose level within a normal range.
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