Blood sugar, also known as glucose is present in our bloodstream. The body uses glucose as its main form of fuel to produce energy.Glucose is the primary source of energy for the body's cells, produced by digesting the sugar and starch in carbohydrates. Blood lipids  are primarily a compact energy store. Glucose is transported from the intestines or liver to body cells via the bloodstream, and is made available for cell absorption via the hormone insulin, produced by the body primarily in the pancreas.
Blood sugar level is the amount of glucose (sugar) present in the blood of a human or animal. Glucose levels are usually lowest in the morning, before the first meal of the day, and rise after meals for an hour or two by a few millimolar.The normal range of the blood sugar level maintained by the body for its smooth functioning is about 70 to 150 mg/dL. It is normal for the sugar level to fluctuate throughout the day.Blood sugar levels outside the normal range may be an indicator of a medical condition. An increase or decrease in the blood sugar levels in the human body can lead to, either hyperglycemia or hypoglycemia.
Diabetes mellitus is characterized by persistent hyperglycemia, either because the body does not produce enough insulin, or because cells do not respond to the insulin that is produced.There are three main types of diabetes mellitus.Type 1 DM,Type 2 DM and gestational diabetes.
The classical symptoms of untreated diabetes are loss of weight, polyuria, polydipsia and polyphagia.Prolonged high blood glucose can cause glucose absorption in the lens of the eye, which leads to changes in its shape, resulting in vision changes.
Monitoring your blood sugar levels is very important and one the best ways of this is to keep a blood sugar level chart.A blood sugar chart can benefit someone who is not at risk for diabetes but just wants to live a healthier lifestyle.