Thursday, August 28, 2014

Call For Abstracts: Canadian Obesity Summit, Toronto, April 28-May 2, 2015

COS2015 toronto callBuilding on the resounding success of Kananaskis, Montreal and Vancouver, the biennial Canadian Obesity Summit is now setting its sights on Toronto.

If you have a professional interest in obesity, it’s your #1 destination for learning, sharing and networking with experts from across Canada around the world.

In 2015, the Canadian Obesity Network (CON-RCO) and the Canadian Association of Bariatric Physicians and Surgeons (CABPS) are combining resources to hold their scientific meetings under one roof.

The 4th Canadian Obesity Summit (#COS2015) will provide the latest information on obesity research, prevention and management to scientists, health care practitioners, policy makers, partner organizations and industry stakeholders working to reduce the social, mental and physical burden of obesity on Canadians.

The COS 2015 program will include plenary presentations, original scientific oral and poster presentations, interactive workshops and a large exhibit hall. Most importantly, COS 2015 will provide ample opportunity for networking and knowledge exchange for anyone with a professional interest in this field.

Abstract submission is now open – click here

Key Dates

  • Abstract submission deadline: October 23, 2014
  • Notification of abstract review: January 8, 2014
  • Early registration deadline: March 5, 2015

For exhibitor and sponsorship information – click here

To join the Canadian Obesity Network – click here

I look forward to seeing you in Toronto next year!

@DrSharma
Montreal, QC

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Wednesday, June 18, 2014

4th Canadian Obesity student Meeting (COSM 2014)

Uwaterloo_sealOver the next three days, I will be in Waterloo, Ontario, attending the 4th biennial Canadian Obesity Student Meeting (COSM 2014), a rather unique capacity building event organised by the Canadian Obesity Network’s Students and New Professionals (CON-SNP).

CON-SNP consist of an extensive network within CON, comprising of over 1000 trainees organised in about 30 chapters at universities and colleges across Canada.

Students and trainees in this network come from a wide range of backgrounds and span faculties and research interests as diverse as molecular genetics and public health, kinesiology and bariatric surgery, education and marketing, or energy metabolism and ingestive behaviour.

Over the past eight years, since the 1st COSM was hosted by laval university in Quebec, these meetings have been attended by over 600 students, most presenting their original research work, often for the first time to an audience of peers.

Indeed, it is the peer-led nature of this meeting that makes it so unique. COSM is entirely organised by CON-SNP – the students select the site, book the venues, review the abstracts, design the program, chair the sessions, and lead the discussions.

Although a few senior faculty are invited, they are largely observers, at best participating in discussions and giving the odd plenary lecture. But 85% of the program is delivered by the trainees themselves.

Apart from the sheer pleasure of sharing in the excitement of the participants, it has been particularly rewarding to follow the careers of many of the trainees who attended the first COSMs – many now themselves hold faculty positions and have trainees of their own.

As my readers are well aware, I regularly attend professional meetings around the world – none match the excitement and intensity of COSM.

I look forward to another succesful meeting as we continue to build the next generation of Canadian obesity researchers, health professionals and policy makers.

You can follow live tweets from this meeting at #COSM2014

@DrSharma
Waterloo, Ontario

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Thursday, March 27, 2014

Three Essential Ways in Which Melatonin Links to Energy Balance

sharma-obesity-pineal-glandAs a regular reader, you will be quite familiar with the emerging recognition of sleep (or rather lack thereof) as an important determinant of weight gain.

Melatonin, an evolutionary ancient molecule that, in mammals, is secreted from the pineal gland, is a hormone that plays a major role as a key regulator of the circadian cycle, along which  virtually all metabolic activities are coordinated.

A paper by José Cipolla-Neto and colleagues, published in the Journal of Pineal Research, provides a fascinating overview of how melatonin plays a significant role in energy metabolism.

Its first role relates to insulin secretion and action. Thus, melatonin is not only necessary for the proper synthesis and secretion of insulin, it also plays a role in the insulin-signalling pathway through its effects on GLUT4 receptors.

Secondly, as a powerful chronobiotic, it helps coordinate various metabolic processes so that the activity/feeding phase of the day is associated with higher insulin sensitivity whereas the rest/fasting phase is synchronized to lower insulin sensitivity.

Thirdly, melatonin plays an important role in regulating energy flow to and from fat stores and directly regulating the energy expenditure through the activation of brown adipose tissue and participating in the browning process of white adipose tissue.

The paper discusses how the reduction in melatonin production, as seen during aging, shift-work or night-time light exposure can induce insulin resistance, glucose intolerance, sleep disturbance and metabolic circadian disorganization, which together can lead to weigh gain.

Thus, the available data supports the notion that melatonin replacement therapy may provide a novel strategy to influence metabolism, at least in people with disruptions in their melatonin system.

Clearly, these notions need to be tested in well-controlled randomised trials but there certainly appears to be ample data to suggest that such a trial may well be worthwhile.

If you have taken melatonin or prescribed it to your patients, I’d certainly like to hear about your experience.

@DrSharma
Edmonton, AB

Hat tip to Sukie for pointing me to this article.

ResearchBlogging.orgCipolla-Neto J, Amaral FG, Afeche SC, Tan DX, & Reiter RJ (2014). Melatonin, Energy Metabolism and Obesity: a Review. Journal of pineal research PMID: 24654916

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Thursday, March 20, 2014

Sleep Duration Strongest Predictor of Health Risk in Obese Teens?

sharma-obesity-kid-sleep-book

If you had to guess the strongest predictor of cardiometabolic health risks in  obese teenagers, most of us would probably suspect their diet, sedentariness, or even mental health issues around mood, body image, or self-esteem.

Few of us would have guessed sleep duration.

But this is exactly what was found by Paul Gordon and colleagues from the University of Michigan, in a study published in the Journal of Pediatrics.

Although relatively small (the study included just 37 participants aged 11-17), the researchers went to great lengths to objectively measure habitual physical activity and sleep patterns as well as a wide range of cardiometabolic risk factors.

Amongst all of the measured variables, total sleep time and sleep fragmentation were inversely and independently associated with metabolic risk – the shorter the sleep time, the greater the risk.

This relationship remained robust even when the data were adjusted for various measures of physical activity, anthropometry, and adiposity.

Most subjects slept about seven hours a night, typically waking up at least once, with only five subjects getting the minimum recommended 8.5 hours of sleep each night.

Given what we now know about the profound impact of sleep deprivation on metabolism, physical activity and eating behaviours, it is astonishing that so little attention is being paid to the issue of sleep both in the public discourse of obesity as well as in clinical management of excess weight.

As I have said before, the three key drivers of obesity in my view are lack of time, lack of sleep and increased stress – everything else is either a consequence of or compounded by these factors.

Is it time for doctors to begin handing out sleep prescriptions?

@DrSharma
Edmonton, AB

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Tuesday, January 7, 2014

15 New Year Health Resolutions That Might Just Work

Arya Sharma Globe&Mail CartoonYesterday, the Globe & Mail ran a full page of Health Tips, one each from what they call “leading experts” (of who, I just happen to be one).

Here’s what the experts had to recommend:

1) Eat a pickle (rationale: fermented and preserved foods often contain bugs that may be good for you)

2) Don’t drink your calories (rationale: no benefits from drinking your calories that you cannot get from eating them)

3) Relax your mouth (rationale: unclenching you jaw helps you relax)

4) Walk (rationale: myriad health benefits of being more active)

5) Unplug (rationale: time to try other stuff – like reading a book)

6) Stop doing situps (rationale: bad for posture and your pelvic organs – does nothing to flatten your tummy)

7) Go to bed (rationale: sleep does wonders for your metabolism)

8) But set your alarm (rationale: waking up at the same time every day helps set your master clock)

9) Eat slowly (rationale: mindful slow eating is your best bet against overeating)

10) Breathe (rationale: slow breathing will help calm your nerves)

11) Clean up your kitchen (rationale: unprocessed and unsprayed plant-based whole foods are better for you)

12) Shake a leg (rationale: same as 4)

13) Use protection (rationale: helmets prevent brain injuries)

14) Invest in yourself (rationale: you need to make time to live healthier)

15) Take it outside (rationale: sunlight will improve your mood, memory and weight)

So there you go.

Don’t ask me for the actual evidence behind each of these – I’m sure it exists for what it’s worth – most of this stuff is really just common sense.

But then again, if things were really that easy, we’d be a nation of health nuts.

If you’ve made a resolution (and a full week into the New Year are still sticking with it) please feel free to share.

@DrSharma
Edmonton, AB

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In The News

Diabetics in most need of bariatric surgery, university study finds

Oct. 18, 2013 – Ottawa Citizen: "Encouraging more men to consider bariatric surgery is also important, since it's the best treatment and can stop diabetic patients from needing insulin, said Dr. Arya Sharma, chair in obesity research and management at the University of Alberta." Read article

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