Genetics & Obesity

The American Society for Addiction Medicine held their annual conference in Toronto this past weekend. One of the attendees, Dr. Carolyn Ross spoke about the link between human genetics and obesity. In an interview with a local radio station, 680 News, Dr. Ross said that “70 per cent of obesity is genetic”.

Dr. Ross hopes that this linkage between obesity and genetics will ‘take away some of the stigma and shame associated with obesity’.

A related newspaper article appeared in this past Sunday’s Toronto Star. In this article, the link between anorexia nervosa and human genetics was discussed. In this article, the point was made that over the past 30 years, the rate of anorexia has remained unchanged while the rate of bulimia has risen sharply. The point being made here is that while bulimia may indeed be driven by a societal demand for thinness, anorexia may be driven by a genetic flaw.

While research into a genetic cause of anorexia (or bulimia, binge eating, etc) is only in it’s infancy, “results of the first genetic studies, released in the past five years, reveal that genetic vulnerability for anorexia nervosa lies on chromosome 1 of the 24 chromosomes that make up the human genome”.

So what do we take from this?

If Dr. Ross is correct and genetics has a huge impact on obesity, do we ignore the smaller role of our own behaviour? If you knew that you had inherited a genetic propensity towards obesity, do you give up trying to eat a healthy diet and engage in physical exercise? Do you wait for science to come up with a genetic cure?

While I agree with Dr. Ross that the social stigma attached to obesity is cruel and thoughtless ( if there is a genetic component to both obesity & cancer, why is it acceptable to mock the obese but not a cancer patient?), obese individuals still have to accept responsibility for their own health.

For every person who was born with a congenital leptin deficiency, there are thousands upon thousands of obese individuals who have a simple genetic predisposition towards obesity. A PREDISPOSITION.

Genetics is not Destiny.

Learn how to keep your body healthy, learn how to train your body to overcome cravings, eat well, exercise, and make the most with the genetic hand that you were dealt.

My fitness blog

Advertisements

2 Comments

Filed under In the News

2 responses to “Genetics & Obesity

  1. I like that you pointed out the biggest detail that so many people ignore when they read headlines that say genetics “causes” obesity. That detail being that genetics causes only a predisposition to being heavy.
    It’s hardly different than if alcoholism runs in your family. Unless you avoid the liquid goodness, you will more easily fall into that downward spiral. But stay away from it, and you’ll likely be ok.

    I like your blog. I wish I could click on those food pyramids at the top and enlarge them though 🙂

  2. DR

    Thanks for the love McBloggenstein.

    I am new to this and I appreciate your feedback. I am going to check out your site after I finish this.

    Images – try googling “food pyramid ethnic” and look at the images tab – lots to look at

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s