
- With Mayo Clinic diabetes educators
Nancy Klobassa Davidson, R.N., and Peggy Moreland, R.N.
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Nancy Klobassa Davidson, R.N., and Peggy Moreland, R.N.
Nancy Klobassa Davidson and Peggy Moreland
Nancy Klobassa Davidson, R.N., B.S.N, C.D.E
Nancy Klobassa Davidson is a registered nurse who has worked in diabetes education for 17 years. She is a certified diabetes educator (C.D.E.) and is currently in graduate school working on a Master of Science in nursing (M.S.N.) and health care education.Nancy works with adults who have type 1, type 2 and other forms of diabetes. Nancy is coordinator of the Diabetes Unit's intensive insulin therapy program within the Division of Endocrinology, Diabetes, Metabolism, & Nutrition at Mayo Clinic in Rochester, Minn. Nancy has worked extensively with insulin pump therapy and continuous interstitial glucose sensing.
Peggy Moreland, R.N., M.S.N.
Peggy Moreland is a certified diabetes educator (C.D.E.) in the Division of Endocrinology, Diabetes, Metabolism, & Nutrition at Mayo Clinic in Rochester, Minn.Peggy graduated with a Master of Science in Nursing and Health Care Education from the University of Phoenix and is a member of the American Association of Diabetes Educators and the American Diabetes Association. A certified diabetes educator (C.D.E.), Peggy enjoys working with patients to set and achieve diabetes self-management goals.
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Living with diabetes blog
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Aug. 1, 2009
Blog: Heat and diabetes
By Nancy Klobassa Davidson, R.N., and Peggy Moreland, R.N.
Hi Bloggers,
If you're experiencing hot weather this summer, believe it or not heat doesn't have a direct effect on your blood glucose, but can lead to changes in your daily routine that can affect your blood glucose.
For example, you may eat less or eat more, be more active and/or exert yourself more.
Other considerations in hot weather:
- Avoid sunburn, it can stress your body and can raise your blood glucose. Wear a good sunscreen, sunglasses and hat when out in the sun.
- Drink plenty of water to avoid dehydration. Carry a bottle of water with you on walks, etc.
- Exercise and do more strenuous activities in the early or later hours of the day when the temperatures are cooler and the sun is not at its peak.
- Whenever your daily routine changes, test your blood glucose more often.
- Remember, extreme temperature changes can have an effect on your diabetes supplies; insulin can break down in extreme heat, heat and humidity can damage blood glucose meters and test strips, and altitude can affect blood glucose meter performance.
Often, in the summer season, people are more active and insulin requirements change. For example, many farmers with diabetes in our area have considerably lower insulin requirements in the summer months when they are out in the fields vs. the winter months when they are inside and more sedate.
How does the heat affect your blood glucose and how you handle it?
I hope you're having a wonderful summer and I look forward to reading your comments.
Nancy
18 comments posted
September 26, 2011 4:05 p.m.
Norman: Sorry to hear about your fiancee. We recommend that you follow closely with an endocrinologist and a certified diabetes educator. The American Association of Diabetes Educators (www.diabeteseducator.org/) website lists diabetes educators in your area.
- Nancy and Peggy
September 19, 2011 8:27 p.m.
My fiancee is recovering in hospital from a serious case of DKA, she also had an embolus in the lung during her hospital stay. We neither of us wish to hVe this happen again. Could you please give us the the dos and don'ts so we can avoid this in the future.
- Norman
June 13, 2011 12:06 p.m.
Claudia: Ask his physician for a referral to a certified diabetes educator who will instruct you on insulin dose adjustment instructions. If you are from the US search the American Association of Diabetes Educator website for a list of certified diabetes educators near you.
- Nancy and Peggy
June 10, 2011 3:09 p.m.
I am taking care of my father-in-law. He takes 3-5 injections a day for high blood sugar. But he has occasions that it drops to a dangerous low. We cannot figure out why, or what is causing it. His doctor has not given a reason, just said keep something sweet near by. It can happen in the middle of the night, or suddenly at any time in between meal time. Is there a reason it does this?
- Claudia
August 20, 2010 1:48 p.m.
OK, so I understand about keeping insulin cool -- but how do you keep insulin cool in a pump if you work outside with heat indexes over a hundred on a regular basis? I assume that insulin is affected too by the heat -- isn't it?!?
- Alaina
July 5, 2010 12:12 p.m.
Why do farmers have a lower insulin requirement in the summer when they are in the fields? Thanks for any insights.
- Walter
January 4, 2010 1:29 p.m.
hello every body my name is cory and iam 17, i want to just say i am a hog (pig) hunter one day in the hot summer heat i caught a hog in my trap it was so hot i passed out and my bg(blood glucose) was reading on my meter critacal high. and went to the hospital and went into dka and got imitted to icu
- cory
December 13, 2009 6:24 p.m.
My son has Type 1 Diabetes which he seems to control very well according to regular Dr. check ups. However, he also has Muscular Dystrophy and is in a wheelchair, so his ability to exercise is almost nil. He has had both diseases since he was bout 17, and is 45 now. The last few years, his ankles have almost continuous sores, for which he applies an antibiotic prescription. Would a heated water foot spa, about 115 degrees, be helpful to his circulation, or in some way harm him? Thanks
- Jerry
November 26, 2009 5:24 p.m.
I have a friend who moved to Beaumont who has diabetes and is getting married before my friend moved to Beaumont she worked out in the heat in the parking lot of a grocery store in Texas City, Texas. That same day she tested her blood sugar and it was low. I am a borderline diabetic myself and have family that are diabetics. Does it increase my chances of developing diabetes as well.
- Brenda
August 26, 2009 3:40 p.m.
Dear Nancy and Peggy My 4 year old (diagnosed at 21 months) has recently, on two different occasions, suffered from a stiff neck. Once on the rightside and once on the leftside. I am quite concerned as to what could be causing this. His parents are very attentive to his health, but perceive my concern as meddling. So I just have to watch and wonder in silence. Can you offer any insight to this?
- Nonni
August 18, 2009 4:06 p.m.
Kent, we hear you! Good luck with the El Tour De Tucson race.
- Nancy and Peggy
August 17, 2009 10:10 a.m.
Thanks Nancy and Peggy When I ride and RACE I am competing against non-diabetics I wish one of the blood glucose meter manufactures would come out with a more durable meter, for those of us that don't let the disease stop us, I would pay top dollar! Next race El Tour De Tucson-109 miles.
- Kent
August 14, 2009 3:01 p.m.
Kent: After personally paging through a number of package inserts for multiple brands of meters; the general rule for most meters is to keep meters and test strips at room temperature and away from direct sunlight, moisture and heat. This makes it tough in extreme conditions. I would keep the meter/test strips next to my body and underneath the clothing or in insulated packs. Look at the package insert, if you still have it, and it will give you specifics on temp range for your meter.
- Nancy and Peggy
August 13, 2009 12:17 p.m.
Ok, if hot weather doesn't have an affect on your blood sugar then the comment "...insulin can break down in extreme heat" wouldn't cause a change in blood sugar? I think so. I'm type 2 as well.
- Rick - Las Vegas
August 13, 2009 12:16 p.m.
Don’t forget to take electrolytes. I commute to work 3 days a week and ride 50 to 60 miles on Saturday I have type 1 diabetes. I need a blood glucose meter that can handle extreme cold, wind and heat and one handed. Any suggestions. I currently use Accu-check compact strapped to my arm. From Tucson AZ.
- kent
August 13, 2009 10:18 a.m.
T2 = Type 2 diabetic
- Maggie
August 5, 2009 7:57 a.m.
what is t2?
- Albert
August 4, 2009 8:31 p.m.
The heat doesn't bother me but humidity does. I eat less when I'm busy outdoors, so that only helps my blood glucose. I exercise in an air-conditioned gym, which keeps my energy at normal levels. I'm T2 and controlling with diet and exercise.
- Carol Ann

18 comments posted