The study, published in the September issue of Journal of Health Economics found that friends' weight is correlated with an adolescent’s own weight even after considering demographics, smoking status, birth weight, and household characteristics such as parental obesity.
"Our results may help explain the dramatic rise in obesity among adolescents in the past few decades," said Justin Trogdon, Ph.D. a health economist at RTI and the paper's lead author. "Peers can influence all of the significant weight-related choices for teens, including eating patterns, diets and physical activity. Peers also affect teens’ perceptions of an acceptable weight."
The researchers found the peer effect on weight was strongest among females, and among adolescents who were at risk of becoming overweight.
The study also showed that teens with obese parents were more likely to be overweight themselves.
The study used data from the National Longitudinal Study of Adolescent Health, a study that RTI helped conduct, that surveyed youths in grades 7 through 12. The researchers looked at students from 16 schools included in the data and defined peer groups based on friendships and grade level.
"Research has also indicated that peers may help adolescents to lose weight," Trogdon said. "Better understanding peer influence on weight will help improve policies and prevention efforts aimed at reducing adolescent weight."
Lisa Bistreich | Newswise Science News
New measure for the wellbeing of populations could replace Human Development Index
07.11.2018 | International Institute for Applied Systems Analysis (IIASA)
Because not only arguments count
30.10.2018 | Max-Planck-Institut für Mathematik in den Naturwissenschaften (MPIMIS)
The quality of additively manufactured components depends not only on the manufacturing process, but also on the inline process control. The process control ensures a reliable coating process because it detects deviations from the target geometry immediately. At LASER World of PHOTONICS 2019, the Fraunhofer Institute for Laser Technology ILT will be demonstrating how well bi-directional sensor technology can already be used for Laser Material Deposition (LMD) in combination with commercial optics at booth A2.431.
Fraunhofer ILT has been developing optical sensor technology specifically for production measurement technology for around 10 years. In particular, its »bd-1«...
The well-known representation of chemical elements is just one example of how objects can be arranged and classified
The periodic table of elements that most chemistry books depict is only one special case. This tabular overview of the chemical elements, which goes back to...
Light can be used not only to measure materials’ properties, but also to change them. Especially interesting are those cases in which the function of a material can be modified, such as its ability to conduct electricity or to store information in its magnetic state. A team led by Andrea Cavalleri from the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg used terahertz frequency light pulses to transform a non-ferroelectric material into a ferroelectric one.
Ferroelectricity is a state in which the constituent lattice “looks” in one specific direction, forming a macroscopic electrical polarisation. The ability to...
Researchers at TU Graz calculate the most accurate gravity field determination of the Earth using 1.16 billion satellite measurements. This yields valuable knowledge for climate research.
The Earth’s gravity fluctuates from place to place. Geodesists use this phenomenon to observe geodynamic and climatological processes. Using...
Discovery by Brazilian and US researchers could change the classification of two species, which appear more akin to jellyfish than was thought.
The tube anemone Isarachnanthus nocturnus is only 15 cm long but has the largest mitochondrial genome of any animal sequenced to date, with 80,923 base pairs....
29.04.2019 | Event News
17.04.2019 | Event News
15.04.2019 | Event News
19.06.2019 | Materials Sciences
19.06.2019 | Information Technology
19.06.2019 | Machine Engineering