Blood sugar

Blood sugar is an amount of glucose present in the blood of humans or animals. Sugar in the blood is the primary source for energy for body cells and blood lipids. Low blood sugar means hypoglycemia. High blood sugar means hyperglycemia. People with diabetes mellitus can have high blood sugar.

Hypoglycemia

Hypoglycemia is low blood sugar.

Hyperglycemia

Hyperglycemia is high blood sugar. Some of the signs of high blood sugar are:

• Thirstiness
• Being extra hungry
• Peeing more often
• Headache
• Blurry eyesight

Some signs of long time high blood sugar can be:

• Being very tired
• Loosing weight
• Infections of the skin
• Cuts and sores heal slowly

Another sickness that is caused by high blood sugar is ketoacidosis. This sickness is because of a lack of insulin and a high amount of chemicals called ketones in the blood.

Blood Sugar Media

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  The fluctuation of blood sugar (red) and the sugar-lowering hormone*insulin (blue) in humans during the course of a day with three meals. One of the effects of a sugar-rich vs a starch-rich meal is highlighted.