Blood sugar, or glucose, is a form of sugar that serves as the body’s main source of energy. We obtain glucose from the food we eat, predominantly carbohydrate-rich foods such as potatoes, rice and bread. The absorption and storage of glucose is regulated constantly by complex processes that take place in our digestive systems. 

What constitutes normal blood glucose varies for an individual depending on a range of factors, including age, any underlying medical conditions, and the medications they take — and depends on when they consumed their last meal.

Normal blood sugar before and after meals


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