Forbes Health's medically reviewed guide explores normal blood sugar (glucose) levels by age, plus when it might be appropriate to visit a doctor.

While blood sugar is essential to survive, when blood sugar levels get too high, one may have a condition called hyperglycemia.

While blood sugar is essential to survive, when blood sugar levels get too high, one may have a condition called hyperglycemia.

Several tests can check in on your blood glucose levels. Normal numbers may look different if you have existing blood sugar issues.

Most people don't have to track blood sugar levels constantly, according to a doctor. It's normal for blood sugar levels to change throughout the day, and not cause for concern. To avoid ...

But when that final step doesn’t happen, glucose can build up in your bloodstream—causing you to have high blood sugar and ...

A normal blood sugar reading when fasting is typically 70 to 100 milligrams per deciliter (mg/dL), said Dr. Vijaya Surampudi, an endocrinologist and nutrition specialist at UCLA Health.

These days, people are tracking their blood sugar levels with wearables. But if you want to be healthy long-term, a doctor recommends five habits.

Drinking dark tea daily may help balance blood sugar levels and stave off type 2 diabetes, the form of the disease most closely tied to obesity.

More than one in three adults in the United States has prediabetes, higher-than-normal blood sugar levels that can lead to Type 2 diabetes. And more than one in 10 has diabetes, characterized by ...

New research has discovered neurons within the brain which detect and respond to changes in the level of sugar within the bloodstream. Understanding how this blood-sugar detection system works and ...

Though a blood sugar crash isn't usually anything to be overly concerned about, it's a good reminder that what we eat affects how we feel.