Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Sibling composition impacts childhood obesity risk

08.07.2014

Having obese brothers and sisters is more revealing indicator of child obesity than having obese parents, according to new study published in the American Journal of Preventive Medicine

It is well documented that children with obese parents are at greater risk for obesity. In a new study, researchers from Massachusetts General Hospital, Cornell University, and Duke University looked at how different kinds of family associations affect obesity, specifically how sibling relationships affect a child's weight.

They not only found a correlation between parents and child, but also discovered a link between having an obese sibling and a child's obesity risk, after adjusting for the parent-child relationship. Their findings are published in the October issue of the American Journal of Preventive Medicine.

By surveying adults in 10,244 American households, investigators found that the likelihood of childhood obesity varies with the number of children in a household, as well as their gender. According to the study, in a single child household, a child is 2.2 times more likely to be obese if a parent is also obese.

However, in families with two children, the data showed a stronger relationship with sibling obesity than with parental obesity. Older children in a two-child household with an obese parent are 2.3 times more likely to be obese, but that number jumps to 5.4 times for those with overweight younger siblings. If the child is the younger sibling in a two-child household, parental obesity is not relevant to risk, but having an obese older sibling is associated with a 5.6-fold higher risk.

"The family environment is known to exert a strong influence on the trajectory of children's health, and prior research has done a great deal to illuminate connections between parent and offspring obesity. Others have also found that obesity is also often correlated between siblings. Our study extends these findings by integrating data on both parent-child, and sibling relationships. We found that obesity status of a younger child's older sibling is more strongly associated with a child's obesity than is the parent's obesity status," notes lead investigator Mark C. Pachucki, PhD, Mongan Institute for Health Policy, Massachusetts General Hospital, Boston, MA.

"This association is independent of a host of socioeconomic and demographic attributes, health behaviors, and overall health status." Dr. Pachucki began this research collaboration when he was a Robert Wood Johnson Foundation Health and Society Scholar at the University of California, Berkeley, and University of California, San Francisco.

The data also uncovered a link between gender and obesity risk. In homes with only one child, girls were less likely to be obese than their male counterparts. Gender was also an important factor for siblings in two-child households. The study suggests that younger children may be particularly susceptible to the influence of an older sibling, especially if that sibling is of the same sex.

"For youngest boys in two-child families, obesity is 11.4 times more likely with a male older sibling," write the authors. "If that younger boy's elder sibling is a girl, the boy is 6.6 times more likely to be obese. In two-child families, youngest-girl obesity is 8.6 times more likely with a female older sibling and is not significantly more likely if the older sibling is male. Thus, for younger children, there is a discernible gender correlation in sibling obesity status: having an obese elder same-gender sibling is associated with an increased likelihood of the younger child being obese."

Of course, exercise and food consumption play key roles in the prevention of obesity, and investigators found that only children were less likely to engage in physical activity and more likely to eat fast food than their counterparts with brothers and sisters. Curiously, however, the data also showed that having a highly active older sibling raised the obesity risk for the younger sibling. "Younger siblings with more vigorous physical activity are significantly less likely to be obese, though having an elder sibling who is extremely active is associated with a higher risk of younger-sibling obesity," clarifies Dr. Pachucki.

While the authors stress that more within-family obesity research is needed, this new study offers key data that will be beneficial in the fight against childhood obesity. "Because this study is cross-sectional, a snapshot of one point in time, we cannot claim that these particular siblings are causing one another's weight status.

And we were only able to look at one-child and two-child families. Still, our findings are consistent with research showing that siblings tend to eat alike and have similar levels of physical activity," concludes Dr. Pachucki. "In seeking to reduce the prevalence of childhood obesity, it may be productive to consider prevention and treatment models that meaningfully recognize siblings as interconnected."

Angela J. Beck | Eurek Alert!
Further information:
http://www.elsevier.com

Further reports about: Elsevier Health Overweight activity claim composition connections obesity weight

More articles from Studies and Analyses:

nachricht Diagnoses: When Are Several Opinions Better Than One?
19.07.2016 | Max-Planck-Institut für Bildungsforschung

nachricht High in calories and low in nutrients when adolescents share pictures of food online
07.04.2016 | University of Gothenburg

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New welding process joins dissimilar sheets better

Friction stir welding is a still-young and thus often unfamiliar pressure welding process for joining flat components and semi-finished components made of light metals.
Scientists at the University of Stuttgart have now developed two new process variants that will considerably expand the areas of application for friction stir welding.
Technologie-Lizenz-Büro (TLB) GmbH supports the University of Stuttgart in patenting and marketing its innovations.

Friction stir welding is a still-young and thus often unfamiliar pressure welding process for joining flat components and semi-finished components made of...

Im Focus: First quantum photonic circuit with electrically driven light source

Optical quantum computers can revolutionize computer technology. A team of researchers led by scientists from Münster University and KIT now succeeded in putting a quantum optical experimental set-up onto a chip. In doing so, they have met one of the requirements for making it possible to use photonic circuits for optical quantum computers.

Optical quantum computers are what people are pinning their hopes on for tomorrow’s computer technology – whether for tap-proof data encryption, ultrafast...

Im Focus: OLED microdisplays in data glasses for improved human-machine interaction

The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP has been developing various applications for OLED microdisplays based on organic semiconductors. By integrating the capabilities of an image sensor directly into the microdisplay, eye movements can be recorded by the smart glasses and utilized for guidance and control functions, as one example. The new design will be debuted at Augmented World Expo Europe (AWE) in Berlin at Booth B25, October 18th – 19th.

“Augmented-reality” and “wearables” have become terms we encounter almost daily. Both can make daily life a little simpler and provide valuable assistance for...

Im Focus: Artificial Intelligence Helps in the Discovery of New Materials

With the help of artificial intelligence, chemists from the University of Basel in Switzerland have computed the characteristics of about two million crystals made up of four chemical elements. The researchers were able to identify 90 previously unknown thermodynamically stable crystals that can be regarded as new materials. They report on their findings in the scientific journal Physical Review Letters.

Elpasolite is a glassy, transparent, shiny and soft mineral with a cubic crystal structure. First discovered in El Paso County (Colorado, USA), it can also be...

Im Focus: Complex hardmetal tools out of the 3D printer

For the first time, Fraunhofer IKTS shows additively manufactured hardmetal tools at WorldPM 2016 in Hamburg. Mechanical, chemical as well as a high heat resistance and extreme hardness are required from tools that are used in mechanical and automotive engineering or in plastics and building materials industry. Researchers at the Fraunhofer Institute for Ceramic Technologies and Systems IKTS in Dresden managed the production of complex hardmetal tools via 3D printing in a quality that are in no way inferior to conventionally produced high-performance tools.

Fraunhofer IKTS counts decades of proven expertise in the development of hardmetals. To date, reliable cutting, drilling, pressing and stamping tools made of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

HLF: From an experiment to an establishment

29.09.2016 | Event News

European Health Forum Gastein 2016 kicks off today

28.09.2016 | Event News

Laser use for neurosurgery and biofabrication - LaserForum 2016 focuses on medical technology

27.09.2016 | Event News

 
Latest News

New Multiferroic Materials from Building Blocks

29.09.2016 | Materials Sciences

Silicon Fluorescent Material Developed Enabling Observations under a Bright “Biological Optical Window”

29.09.2016 | Materials Sciences

X-shape Bio-inspired Structures

29.09.2016 | Interdisciplinary Research

VideoLinks
B2B-VideoLinks
More VideoLinks >>>