Losing weight not always a positive

September 8, 2010

Encouraging the obese to lose weight may not always be beneficial for their wellbeing reports a paper published online in the International Journal of Obesity.

The research reveals how can lead to the release of persistant organic pollutants into the blood, which can have a significant negative impact on a person’s health.

Persistant organic pollutants are commonly created by humans in industrial processes, and have been linked to a wide variety of illnesses, including disruption of the endocrine, reproductive and immune systems, , and cancers. They are stored in fat tissue in the body, however Duk-Hee Lee and colleagues noted that but during weight loss -when the volume of fat is reduced - these compounds are released into the blood where they are able to reach vital organs and take their effect. They observed that this effect occurred to a lesser extent when self reported weight change was sustained for only one year compared to when sustained for 10 years.

This work suggests that it may be important for doctors treating obesity to consider the effects of persistant organic pollutants as these may work against the better health that we generally expect from weight loss. Further research is however needed to determine whether negative health issues observed in weight loss subjects are directly due to an increase in persistant in the blood or to pre-existing conditions and environmental factors.

Explore further: Battle of the bulge: Low leptin levels undermine successful weight loss

More information: DOI:10.1038/IJO.2010.188

Related Stories

Weight loss improves mood in depressed people

July 27, 2009

Research to be presented at the Annual Meeting of the Society for the Study of Ingestive Behavior (SSIB), the foremost society for research into all aspects of eating and drinking behavior, finds that after a 6-month behavioral ...

New evidence that chili pepper ingredient fights fat

June 2, 2010

Scientists are reporting new evidence that capsaicin, the stuff that gives chili peppers their kick, may cause weight loss and fight fat buildup by triggering certain beneficial protein changes in the body. Their study, which ...

Recommended for you

Machine Translates Thoughts into Speech in Real Time

December 21, 2009

(PhysOrg.com) -- By implanting an electrode into the brain of a person with locked-in syndrome, scientists have demonstrated how to wirelessly transmit neural signals to a speech synthesizer. The "thought-to-speech" process ...

Quantum Theory May Explain Wishful Thinking

April 14, 2009

(PhysOrg.com) -- Humans don’t always make the most rational decisions. As studies have shown, even when logic and reasoning point in one direction, sometimes we chose the opposite route, motivated by personal bias or simply ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.