Navigation Links
Could Being a Little Overweight Help You Live Longer?
Date:1/2/2013

By Steven Reinberg
HealthDay Reporter

TUESDAY, Jan. 1 (HealthDay News) -- A new international analysis reveals a surprising pattern: while obesity increases the risk of dying early, being slightly overweight reduces it.

These studies included almost 3 million adults from around the world, yet the results were remarkably consistent, the authors of the analysis noted.

"For people with a medical condition, survival is slightly better for people who are slightly heavier," said study author Katherine Flegal, a senior research scientist at the U.S. Centers for Disease Control and Prevention's National Center for Health Statistics.

Several factors may account for this finding, Flegal added.

"Maybe heavier people present to the doctor earlier, or get screened more often," she said. "Heavier people may be more likely to be treated according to guidelines, or fat itself may be cardioprotective, or someone who is heavier might be more resilient and better able to stand a shock to their system."

The report was published Jan. 2 in the Journal of the American Medical Association.

For the study, Flegal's team collected data on more than 2.88 million people included in 97 studies. These studies were done in the United States, Canada, Europe, Australia, China, Taiwan, Japan, Brazil, Israel, India and Mexico. The researchers looked at the participants' body mass index, or BMI, which is a measurement of body fat that takes into account a person's height and weight.

Pooling the data from all the studies, the researchers found that compared with normal weight people, overweight people had a 6 percent lower risk of death. Obese people, however, had an 18 percent higher risk of death.

For those who were the least obese, the risk of death was 5 percent lower than for normal weight people, but for those who were the most obese the risk of death was 29 percent higher, the findings revealed.

While the study found an association between weight and premature death risk, it did not prove a cause-and-effect relationship.

Indeed, one expert cautioned that body weight alone cannot predict health and the risk of death.

"There are other factors that play a role in overall health," said Dr. William Cefalu, chief and professor of the section of endocrinology, diabetes and metabolism at Louisiana State University and co-author of an accompanying journal editorial.

"Body mass index simply is a parameter; it doesn't take into consideration family history, it doesn't take into consideration smoking, fitness, cholesterol and other factors that should be considered beyond body mass index," he said.

Another expert agreed and added that the issues around body weight are more complicated than this study suggests.

"This is a large, sophisticated and statistically powerful study that shows convincingly that more severe degrees of obesity increase the risk of premature death, while being merely overweight does not," said Dr. David Katz, the director of the Yale University Medical School Prevention Research Center.

"Like the study itself, the messages here are a bit complex," Katz added.

There is a case to be made that a body mass index in what is now considered the overweight range might be redefined as normal, Katz said. "If weight is not harmful to health, there is no reason to suggest otherwise," he said.

This study, however, looks only at death, not chronic medical conditions, Katz noted.

"It may well be being overweight does increase the risk of such conditions as type 2 diabetes, or medication use for cardiac risk factors, without increasing mortality. This study would be blind to such effects," he said.

Katz also noted the trends in obesity may be tipping the scale toward increased risk of dying. "Rates of overweight and obesity overall appear to be stabilizing, while rates of severe obesity are rising briskly," he said.

This study suggests being overweight and remaining so might offer health advantages, "but moving from overweight to obese, and from obese to more obese, is a serious peril and many in the population are doing exactly that," Katz pointed out.

"By clarifying the thresholds at which weight poses a threat of premature death, this study invites us to concentrate our efforts there," he said.

More information

For more on obesity, visit the U.S. National Library of Medicine.

SOURCES: Katherine Flegal, Ph.D., senior research scientist, National Center for Health Statistics, U.S. Centers for Disease Control and Prevention; William Cefalu, M.D., chief and professor, section of endocrinology, diabetes and metabolism, Louisiana State University, New Orleans; David Katz, M.D., M.P.H., director, Yale University School of Medicine Prevention Research Center, New Haven, Conn.; Jan. 2, 2013, Journal of the American Medical Association


'/>"/>
Copyright©2012 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Government Mandates Could Cost Employers Huge Penalties
2. The factor that could influence future breast cancer treatment
3. The factor that could determine future breast cancer treatment
4. Broader background checks and denial criteria could help prevent mass shooting catastrophes
5. Chicken Pox in Children Could Lead to the Much Painful Herpes Zoster; VyGone Introduces the Ultimate Zoster Vaccine
6. Eye Scan Could Help Track Progress of Multiple Sclerosis
7. New markers could improve treatment and survival in acute lymphoblastic leukaemia
8. Super-fine sound beam could one day be an invisible scalpel
9. InventHelp Client Patents “LessMess” – Invention Could Reduce Messes and Smells Caused by Splashed Urine
10. Study: Curbing car travel could be as effective as cutting calories
11. Mind-Controlled Prosthetic Hand Could Be Breakthrough
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Could Being a Little Overweight Help You Live Longer?
(Date:2/10/2016)... IN (PRWEB) , ... February 10, 2016 , ... ... benefits advisory organization, welcomes S.S. Nesbitt as the latest addition to its growing ... has seven other locations throughout the Southeast, from Orlando to Huntsville and in ...
(Date:2/10/2016)... ... ... Armune BioScience signed a definitive agreement with ARCpoint Labs ... the country. Launched in April of 2015, Apifiny is the only cancer specific, non-PSA ... volume exceeded 3,000 tests in 2015. Primary care physicians and urologists have utilized Apifiny ...
(Date:2/10/2016)... ... February 10, 2016 , ... For additional information contact ... , Pioneering book "Better with Age: The Ultimate Guide to Brain Training" by award-winning ... improve memory. The book’s publication date is March 16, 2016. A free review ...
(Date:2/10/2016)... ... February 10, 2016 , ... Everseat has joined the award-winning ... to physicians. The integration will enable Allscripts users to post open appointments to ... mobile app. , The partnership gives Everseat substantial added power to help Allscripts ...
(Date:2/10/2016)... ... ... Workrite Ergonomics this week announced the launch of the Conform Monitor Arm Series, ... was to develop a product from the ground up that would provide the most ... Hulsey, Product Manager for Workrite Ergonomics. “The Conform series features a wide variety ...
Breaking Medicine News(10 mins):
(Date:2/10/2016)... BASEL, Switzerland and SAN DIEGO ... Houston , Inc., a global leader in viral gene ... gene therapy treatments for congestive heart failure and other ... to develop a scalable manufacturing process and produce cGMP-grade ... clinical trials. --> ...
(Date:2/10/2016)... Immune Pharmaceuticals Inc. (NASDAQ: IMNP ), ... has filed a patent application directed to the treatment ... --> --> The new invention ... (histamine dihydrochloride) in combination with immune checkpoint inhibitors. The ... of Ceplene and IL-2 therapy in patients with Acute ...
(Date:2/10/2016)... ANGELES , Feb. 10, 2016  Oxis International ... cancer drug, OXS-1550, was described as a "clinical trial ... the drug went into complete cancer remission. ... University of Minnesota Masonic Cancer Center. --> ... University of Minnesota Masonic Cancer Center. --> ...
Breaking Medicine Technology: