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  • With Mayo Clinic diabetes educators

    Nancy Klobassa Davidson, R.N., and Peggy Moreland, R.N.

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  • Nov. 3, 2009

    Diabetes diagnosis — Type is not always clear

    By Nancy Klobassa Davidson, R.N., and Peggy Moreland, R.N.

11 comments posted

I've noticed in writing this blog and reading the comments a surprising bit of animosity between individuals with type 1 diabetes and type 2 diabetes. In my practice, I've heard statements such as:

  • "Type 1 diabetes, that's the bad one?"
  • "People with type 2, it's their own fault they have diabetes. If they would've taken better care of themselves they wouldn't have diabetes."

Diabetes is bad, no matter what type you have. And the end result can be the same if blood glucose isn't well controlled.

Interestingly, the lines between the types of diabetes are getting a little blurry as we learn more about diabetes. When I first started as a diabetes educator, diagnosing type 1 versus type 2 was pretty clear cut. You were type 2 if you were over 40, were overweight and had a family history of type 2 diabetes. You were type 1 if you were thin, had small insulin requirements, were under 30 years of age and had ketoacidosis.

Today endocrinologists say there are multiple classifications of diabetes. According to the American Diabetes Association's 2009 Standards of Medical Care in Diabetes, there are four clinical classes of diabetes:

  • Type 1: Results from beta cell destruction, leading to zero insulin production (autoimmune disorder)
  • Type 2: Results from progressive insulin cell release defect in addition to insulin resistance
  • Other types due to specific causes: May result from genetic defects in the cells that release insulin, diseases of the pancreas (such as cystic fibrosis), or drugs or chemicals (such as treatments for AIDS or after organ transplant)
  • Gestational diabetes

Some patients can't be clearly classified as having type 1 or type 2 diabetes. Occasionally, patients who are diagnosed with type 2 will actually turn out to have type 1, and vice versa. True diagnosis becomes more obvious over time. One form of type 1 diabetes I'm beginning to see is latent autoimmune diabetes in adults (LADA), sometimes called type 1.5 diabetes. These are older adults with slow onset of progression to type 1 diabetes. Sometimes granny is started on an intensive insulin program at age 82.

OK people, enough with the animosity.

Regards,
Nancy

11 comments posted

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  • August 20, 2010 5:39 p.m.

    I was dx as type 2 15 years ago...and was treated with oral meds only for aboutn 5 years, then I saw a specialist who based on my history (I had a simple paper cut that required major surgery because it would not heal, evidence of minor sores that should have healed and faded with age) discovered that i was really type 1. i also had a strong family hx of type 1 diabetics (father and all his siblings, his mother and all her siblings were all type 1). I was underweight with a very small frame. be sure to really question your m.d. about dx and treatment options. if in doubt seek advice and eval by endo m.d.

    - Sandi

  • April 6, 2010 3:38 p.m.

    Donna: Yes, your 16 year old daughter should see her provider. Normal fasting glucose range for people without diabetes is 70-100. Pre-diabetes: 100-125. 126 and higher: diabetes.

    - Nancy and Peggy

  • April 4, 2010 9:43 a.m.

    my dad just tested my 16 yr old after a 12 hr fast her level read 184 should i be concerned and get her tested????????????/

    - donna

  • February 17, 2010 8:11 p.m.

    Hello, Can you help me? What is considered a normal blood level? What would your blood sugar level be if you are dialbetic, & what would the level be to be consider pre-diabetic. Thank you

    - Shannon

  • January 29, 2010 3:05 p.m.

    Do you know the percentage of individuals with type 2 diabetes that are insulin dependent?

    - Mike

  • November 29, 2009 9:59 p.m.

    I went for a check up due to recent heart attack. The doctor specializes in heart and Diabetes. He ordered a fasting test and then i drank the sugar water and had a 2 hour test. The fasting was 90 and the 2hr test was 182. They said I was positivaly diabetic. He has me checking my blood once a day. The highest it has been is 105. I now walk 40 min a day. How can he say I am diabetic when the normal numbers are higher than mine?

    - Deb

  • November 4, 2009 12:59 p.m.

    I like your blog very much. Each time I see the Mayo newsletter in my inbox, I'm eager to read your blog. Not all of your postings apply to me, but I know they apply to others. I was diagnosed with type 1 more than 24 years ago, so I know quite a bit on this topic. But living with diabetes is a daily challenge, and your blog usually provides me with very helpful information and insight. Thank you.

    - Nina

  • November 4, 2009 9:35 a.m.

    How unkind, Anita. What makes you an expert that you should call out another blogger? Everyone is entitled to what they feel. I haven't always agreed with every article or every blogger but that doesn't give me the right to call them out on it. By the way maybe you should re-read your own blog. The word is anti-depressant - not anit.

    - Ferne

  • November 4, 2009 9:18 a.m.

    I like your blog - I was a mis-diagnosed type 1 - and I found this posting to be very helpful. Britt, darling, you've got some issues, if you are receiving "advice" on which blogs to read and which not to read. You need to re-read your own missive again - talk about animosity! And maybe considering upping your dosage of whatever anit-depressant you're on.

    - Anita

  • November 3, 2009 11:17 p.m.

    Animosity...I feel like you are a teacher calling students down. I do not like your blog. I often wonder if you reread what you write and become upset with some of YOUR opinions. I have been advised not to read your blog and now I choose not to read your blog. I have never learned anything...but I am a former nurse and yes a type 2 with two parents and many family members maternal and paternal. You have a great place for true learning----use it.

    - Britt

  • November 3, 2009 4:14 p.m.

    Well, I had a scare I thought has neuropathy gone far enough to take my foot, it was hurting inside and I had a ulser on the side of my big toe, my foot seemed swollen, It was red. I went to the Dr. he said to wash it good and put neosporen on the ulser, ans set up appt. with podietrist (sp). What is the progression to foot loss? Is this a given eventually, I've known several older people that have lost legs and poof they were dead, oh I'm 56 they were in their 70's well I haven't seen anything on this, it may be to gross to publish

    - Fred

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