Diabetes Self-Management Blog

Our society is obsessed with weight, if you haven’t noticed. More than two thirds of US adults are overweight or obese, there are more diet books published than we can count, and, of course, we have the privilege of watching shows like The Biggest Loser to help keep us in line. And according to government statistics, more than 85% of people with Type 2 diabetes are overweight. So it stands to reason that much of the focus of managing Type 2 diabetes is based on reaching and staying at a healthy weight.

It’s important to note that thin people can get diabetes too, and not just Type 1 diabetes. In a 2008 study published in the journal Diabetes Care, adults age 60 to 79 years old with a body-mass index (BMI) of less than 18.5 (which is considered to be underweight) were 30% more likely to get Type 2 diabetes than adults with a “normal” BMI of 18.5 to 24.9. In a society where being thin equates with beauty, youth, intelligence, and success, there is often little sympathy or patience for people who are too thin and who desperately want to gain weight.

If you’ve struggled with losing weight and keeping it off, you know all too well how challenging that can be. People who want to gain weight often face the same kind of battle. And to have diabetes on top of that can make it doubly difficult.

First things first: identify the cause
If you have diabetes, are underweight, and would like to gain weight, it’s helpful to first have a talk with your doctor. Make sure there are no health or medical reasons for you being underweight (especially if you’ve recently lost weight without trying) such as having an overactive thyroid, a digestive disorder (such as Crohn disease), or cancer, for example. A physical exam, blood work, and other tests may be needed to rule out certain conditions. Also, don’t overlook your mental health: Being stressed, anxious, or depressed can turn off your appetite like a light switch.

Next, focus on your diabetes: uncontrolled diabetes, evidenced by constant high blood glucose levels and a high A1C level, can cause you to shed pounds and make it virtually impossible to gain weight. Why? Glucose levels that remain high for a while signal insufficient amounts of insulin, whether injected or made by your pancreas. When there isn’t enough insulin around, glucose stays in your blood and can’t get to your cells to be used for energy. The body needs fuel from somewhere, so in the absence of glucose, it starts to burn fat and muscle (burning fat can be good, burning muscle not so much).

So, if you’ve lost weight and/or are unable to gain weight AND your blood glucose levels have been running high, your first goal is to focus on getting your diabetes under better control. Doing so may mean starting on medicine (including, possibly, insulin), adding a different type of medicine to your regimen, and/or increasing the dose of a diabetes medicine that you’re already taking. And, of course, meal planning and physical activity work with your diabetes medicine to help you manage your diabetes, as well. In many cases, you may regain the lost weight once your blood glucose levels are reigned in.

Another possible cause of weight loss may be some of the medicines that you take. While the effect of medicine on weight is often very individualized, certain medicines could possibly affect your weight including the following:

• Sedatives (diazepam [brand name Valium and others])
• Antidepressants (bupropion [Wellbutrin and others], fluoxetine [Prozac and others], amitriptyline [Elavil and others])
• Antianxiety meds (benzodiazepines, buspirone [Buspar])

Diabetes medicines aren’t off the hook as far as weight loss goes, either. One example is metformin, a drug commonly used to help manage Type 2 diabetes. Metformin works by lowering the amount of glucose produced by the liver, decreasing absorption of glucose in the intestines, and increasing the body’s sensitivity to insulin. Some people who start taking metformin end up losing weight, likely due to several reasons: Metformin can blunt the appetite, and initially, may cause nausea, vomiting, and/or diarrhea (symptoms not exactly conducive to eating).

GLP-1 receptor agonists, such as exenatide (Byetta), liraglutide (Victoza), and exenatide extended-release (Bydureon) are non-insulin injectable medicines that work in several ways to help lower blood glucose: They slow the release of glucose from the liver, they slow the emptying of the stomach after eating, and they help you eat less by making you feel more full. As a result, many people who start on these medicines lose weight — obviously beneficial for someone trying to lose weight, but perhaps not so much for someone who needs to gain or at least maintain their weight.

If you have questions about side effects of any of the medicines that you take, ask your pharmacist or your health-care provider.

Next week: steps to take to help you gain weight

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Comments
  1. Thanks, Amy, for giving us lightweights some recognition. As my A1c entered the prediabetes range, my endo put me on metformin HCL 500mg 4/day. I have since cut back to 3/day. With my decreased appetite, I lost about 7 lbs. I began drinking high (whey) protein mixed in skimmed milk at least once daily. I regained about 5 of the lbs. Recently, I was hit with intestinal flu and really bad diarrhea. Lost all the weight and down to 108.2! Am gradually working to get it back on, but it doesn’t go on quickly. Have lost muscle mass and know that I should be doing some light weight training. Down to size 2 from a 4. I am almost 69 and in good physical shape, walk almost daily, and move a lot. I noticed when I worked in long-term care and with my own mother, when elderly drop a lot of weight, it is really difficult to regain. Decreased appetitite along with taste and smell may be part of the reason. Have had lab work done, saw my doc and nothing appears out of line. Any other tips for gaining. I eat several small meals a day and can’t hold as much food as I did when I was younger. Thanks, Amy. I really enjoy your column.
    Carol T.

    Posted by Carol T |
  2. Hi Carol,

    It certainly can be hard to gain weight. Often, the first step is to stop losing weight, which hopefully you’ve done. It’s good that you’re eating several small meals each day. Make the most of these meals: Add a fat source whenever you can, such as oil, avocado, nuts, or seeds. These will add a lot of calories in a small volume. Since you did well with the whey protein, consider going back to that, except add it to whole milk rather than skim milk. Another option is to try a nutritional supplement like Glucerna, Ensure, or Boost. These do contain carbohydrate, but the priority seems to be gaining weight at this time; if need be, your metformin could always be increased. Also, it’s important to try and rebuild some of your muscle mass, as you mentioned. Small hand weights or a resistance band can be helpful.

    Posted by acampbell |
  3. hi,
    I had been type 2 from last one n half yr.i lost weight now my BMI os 17.9,i wanted to gain some wt. right now my wght is 43kg and my A1c is 7.6,I am taking metformin 1000 for one day.plz tell me wht to do i regularlly do walk too.

    Posted by zubaida |

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