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Hypoglycemia

The Dangerous Complications of Low Blood Sugar

Here's how hypoglycemia may affect the brain and why it’s so dangerous for people with diabetes.

Lauren Smith, MAMandy Armitage, MD
Written by Lauren Smith, MA | Reviewed by Mandy Armitage, MD
Updated on November 6, 2025
Featuring Ana Kausel, MDReviewed by Mandy Armitage, MD | November 6, 2025

Both high blood sugar (hyperglycemia) and low blood sugar (hypoglycemia) can be dangerous to the body. Low blood sugar (below 70 mg/dL) can be an emergency medical event. 

In this video, learn how to prevent and treat low blood sugar, and when to call 911 for hypoglycemia, according to Ana Kausel, MD, Endocrinologist in New York City.

References

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Lauren Smith, MA
Written by:
Lauren Smith, MA
Lauren Smith, MA, has worked in health journalism since 2017. Before joining GoodRx, she was the senior health editor and writer for HealthiNation.
Mandy Armitage, MD
Reviewed by:
Mandy Armitage, MD
Mandy Armitage, MD, has combined clinical medicine with her passion for education and content development for many years. She served as medical director for the health technology companies HealthLoop (now Get Well) and Doximity.

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