Diabetes is characterized by too high glucose, or sugar, in the blood. This is because the body is either unable to produce insulin, like in type 1 diabetes, or it isn’t able to use it properly, like in type 2 diabetes.
Insulin acts like a key that opens cells to allow glucose to leave the blood and enter cells to be used for energy. Without insulin, the cells stay closed and glucose builds up in the blood, causing blood glucose levels to become too high. Over a prolonged period of time, this can lead to diabetes.
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