Gender Wars In Obesity

Obesity is a medical condition that now affects about 25% of the Canadian adult population, with the prevalence being slightly higher amongst men than women.  Interestingly, it is most often women that seek help to treat their obesity.  In fact, in clinical research trials of obesity, enrolment is usually constituted by about 80% women and 20% men - we would much prefer a 50/50 split so that we could study both genders equally well, but the reality is that women are more interested to participate in programs or studies that may help them to lose weight.   Why is this?

Though the reasons are likely multiple and complex, and also different from person to person, it seems that at least some of this difference may be thanks to societal views on obesity in women vs men.   I heard a poignant commentary from a colleague at a meeting recently.  He said:

Next time you are in the grocery store or gas station, have a look at the magazine rack.  When you go to the section that is most often read by women - fashion magazines, women's fitness, social news etc - what do you see?  Thin women, often models that are underweight, in skin tight clothing, strutting their stuff and painting the image of what a woman 'should' look like.  

Now, head to the outdoor and sporting section, which is the section that men most often enjoy.  These men are often larger, dressed in bulky clothing, looking large and strong... while many of these photos are very muscular, many are often carrying excess fat tissue as well. 


This societal dichotomy is doubly unfortunate, because it leaves women with an inappropriate impression of what they 'should' look like, while it could leave men thinking that it may be desirable to carry excess body weight.

I would love to hear from my readers if this resonates with you - feel free to post a message at the end of this blog post.

Follow me on twitter! @drsuepedersen

www.drsue.ca © 2016

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JDRF Reaches Out To Fort McMurray Evacuees with Type 1 Diabetes

In the wake of the wildfires that have ravaged Fort McMurray, there have been many heartwarming stories of outreach and support to victims of this monumental natural disaster.

The JDRF (formerly known as the Juvenile Diabetes Research Foundation) is reaching out to Fort Mac victims living with type 1 diabetes to help ensure they have ongoing access to insulin, test strips and supplies.  Here is the media release directly from the JDRF:

Media Advisory

JDRF Canada Assisting Fort McMurray Individuals Living with Type 1 Diabetes

The North Central Alberta & Northwest Territories Chapter of JDRF Canada is coordinating with local type 1 diabetes (T1D) support groups to provide assistance for T1D families evacuated from Fort McMurray with their insulin related needs.

Families who were forced to evacuate may have limited access to insulin, test strips and other related supplies. Local social media groups for people living with T1D have been very active with families offering to share their supplies with families in need. “Many people are now in the Edmonton Area while others are in camps around Fort McMurray”, said Dorothy Ross, Regional Director for JDRF in Western Canada “We are compiling the lists of people that are in need with people who can share some of their supply, both in the Fort McMurray area and in other communities in the region.”

People who are either in need of or able to offer supplies can contact JDRF at1-855-428-0343 or local at 780-428-0343. For after hours support, please e-mail Edmonton@jdrf.ca. JDRF staff will coordinate resources with those in need.

About JDRF

JDRF is the leading global organization funding type 1 diabetes (T1D) research. JDRF’s goal is to progressively remove the impact of T1D from people’s lives until we achieve a world without T1D. JDRF collaborates with a wide spectrum of partners and is the only organization with the scientific resources, regulatory influence, and a working plan to better treat, prevent, and eventually cure T1D. As the largest charitable supporter of T1D research, JDRF is currently sponsoring $530 million in scientific research in 17 countries. For more information, please visit JDRF.ca.

Follow me on twitter! @drsuepedersen

www.drsue.ca © 2016

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What The Biggest Loser Teaches Us About Metabolism After Weight Loss

Well, I never thought I would say this, but the show The Biggest Loser has been useful for something: it has taught us some important scientific lessons about just how much, and for how long, metabolism drops after weight loss.

(I say that the show is useless otherwise for a host of reasons: It portrays unsafe, dramatic means of weight loss that are not sustainable and gives many incorrect and inappropriate messages about obesity.  I could go on...)

Fourteen participants of The Biggest Loser agreed to have their metabolism measured before the weight loss program, at the end of the 30 week competition, and again 6 years later.

The study (which has been big in the news media in the last several days) was conducted at the National Institute of Health and published in the medical journal Obesity.  The baseline weight amongst these six men and eight women was 148.9kg, and they lost an average of 58kg at the end of the 30 week competition.   After 6 years, most participants regained a significant proportion of the weight lost during the show, with only one person not regaining any weight, and five people having returned to their baseline weight or above.

When they measured metabolism in these people before the competition and compared it to their metabolism 6 years later, they found that on average, their metabolism burned 499 fewer calories per day, compared to what would be expected for a person of that gender, age and body composition who had not previously lost weight.

Similar to an older study I previously blogged about, this teaches us that metabolism decreases markedly after weight loss, not only due to carrying around less weight, but also due to an additional, evolutionarily designed adaptation to defend our body weight. For The Biggest Loser contestants, this means that on average, they have to eat 500 calories less, every day, than they would if they weighed the same but had not come down from a higher weight in the past.  This metabolic adaptation goes on for at least six years after weight loss (based on this study) - and of course may well go on much longer, possibly indefinitely.

So how does a person handle this new lower metabolism after weight loss, to keep the weight off?  We can look to the American National Weight Control Registry to learn about habits that are associated with keeping weight off - the themes are lots of activity (at least an hour a day) and lots of self monitoring - read more on this here.

If you'd like to read more about The Biggest Loser study and the individual participants, the New York Times wrote an excellent article about it, including interviews with several participants - check it out here.

Follow me on twitter! @drsuepedersen

www.drsue.ca © 2016

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