Managing Diabetes In The Summer Heat

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How Does Hot Weather Affect Diabetes?

Woman with a visible diabetic sensor on her arm poses for the camera while leaning on a bridge in a public park, enjoying a bright and sunny day.Extreme summer weather can negatively affect our health.  The combination of high temperatures and humidity can be dangerous, especially for those living with diabetes.

People with diabetes are at a higher risk of developing heat-related illnesses than others.  They are more vulnerable because high temperatures can change how the body uses insulin. High temperatures can cause blood vessels to dilate, accelerating insulin absorption and therefore leading to a drop in blood glucose.

Furthermore, high heat can lead to dehydration. The Centers for Disease Control and Prevention (CDC) reports that people with diabetes get dehydrated more quickly than those who do not have the condition.  This risk is driven by the following factors:

  • Having high blood sugar levels leads to frequent urination, causing dehydration
  • Diabetes can affect the body’s cooling system (Diabetes may damage the nerves that control sweat glands and blood vessels, making it harder for the body to regulate temperature, increasing the likelihood of overheating and dehydration)
  • Many people with diabetes also take medications such as diuretics for high blood pressure; these medications increase fluid loss and the risk of dehydration.

Lastly, extreme heat can also damage diabetic medications, such as insulin, as well as medical devices, including insulin pumps and blood sugar monitors.

Safety tips for managing diabetes in the heat

Following these precautions can help protect your health this summer, so you can enjoy the weather:

  • Stay hydrated- drink plenty of water (even if you don’t feel thirsty) and avoid or limit sugary drinks, alcohol, and caffeinated beverages
  • Keep medications, supplies, and devices out of the heat and store them in a cool place
  • Check your blood glucose levels regularly
  • Avoid outdoor activities during peak heat hours
  • Dress for the weather by wearing clothing that keeps you cool
  • Wear sunscreen

Most importantly, pay attention to the signs of heat-related illnesses and diabetic complications. Look for symptoms such as hot, dry skin with no sweating, rapid breathing, dizziness, nausea, extreme thirst, blurred vision, and headaches.  If you notice any of these symptoms, take appropriate action, and when in doubt, seek immediate medical attention.

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All content of this newsletter is intended for general information purposes only and is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment. Please consult a medical professional before adopting any of the suggestions on this page. You must never disregard professional medical advice or delay seeking medical treatment based upon any content of this newsletter. PROMPTLY CONSULT YOUR PHYSICIAN OR CALL 911 IF YOU BELIEVE YOU HAVE A MEDICAL EMERGENCY.