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Diabetes and Heat: Safety Tips

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If you have diabetes, be extra careful during hot weather. Temperatures of 80°F (about 27°C) or above, especially with humidity, can affect medication, testing supplies, and your health.

If you have diabetes, it is harder for your body to handle high heat and humidity. The heat index, which measures how hot it really feels by combining temperature and humidity readings, advises caution starting at 80°F with 40 percent humidity.

Here are suggestions from CDC’s Division of Diabetes Translation on taking care of yourself during hot weather:

  • Heat can affect your blood glucose (sugar) levels and also increase the absorption of some fast-acting insulin, meaning you will need to test your blood glucose more often and perhaps adjust your intake of insulin, food and liquids.

  • Drink plenty of fluids, especially water, to avoid dehydration. Avoid sugar-sweetened beverages such as sweet tea and sodas.

  • If your doctor has limited how much liquid you can drink, ask what to do during times of high heat.

  • Check package inserts with medications to learn when high temperatures can affect them. Take medications with you if you will need to take them while you’re away from home, and protect them from the heat.

  • If you’re traveling with insulin, don’t store it in direct sunlight or in a hot car. Keep it in a cooler, but do not place it directly on ice or on a gel pack.


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