Explore normal blood sugar levels by age, plus how it links to your overall health and signs of abnormal glucose levels, according to experts.

Age is just one factor that can impact glucose levels. Young children, teens, adults, and older adults may have different blood sugar goals. Learn more with this chart.

A blood sugar chart can help a person know if their glucose levels are within a suitable range. If a person has diabetes, a doctor will make a plan to suit them.

Severely low blood glucose levels (below 54 mg/dL) can increase your risk of complications like fainting and seizures. High Blood Sugar Hyperglycemia can occur with or without diabetes.

Recommended blood sugar levels can help you know if your blood sugar is in a "normal" range. See the charts in this article for type 1 and type 2 diabetes for adults and children.

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A continuous glucose monitor is a small device that sticks to your arm. Every few minutes it sends a signal to your phone estimating your blood sugar levels. But can it improve your health?

When to Test Blood Sugar. You may need to check your blood sugar several times a day, such as before meals or exercise, at bedtime, before driving, and when you think your blood sugar levels are low.

The glycemic index (GI) is a measure of how quickly carbohydrate-containing foods increase a person’s blood glucose (sugar) levels. A food’s GI is expressed as a number between 0 and 100.

Medically, Gestational (jes-TAY-shun-ul) Diabetes Mellitus (GDM) is defined as glucose intolerance, which is diagnosed during pregnancy. It is reported to affect approximately 7% of all pregnancies.

Continuous glucose monitors, or CGMs, are devices that track blood sugar in real-time and can tell wearers how their bodies react to stress, food, sleep or exercise.