The percentage of adolescents aged 15-17 who are overweight today is about 50 percent higher in families below the poverty line in comparison to those at or above it. That difference was not present in the 1970s and 1980s, according to researchers from the Johns Hopkins Bloomberg School of Public Health and other institutions. The scientists based their analyses on U.S. national health surveys spanning 33 years. Adolescents aged 15-17 who were in families with an income below the poverty line were more likely to have higher caloric intake from sweetened beverages, to be physically inactive and to skip breakfast. Each of these factors may have played a role in the growing difference in the percentage of overweight teens associated with family poverty. This trend was specific to adolescents aged 15-17 and was not found among adolescents aged 12-14. The study is published in the May 24/31, 2006, issue of the Journal of the American Medical Association (JAMA).
"The prevalence of overweight adolescents in the United States has more than doubled in the past three decades. And the percentage of adolescents who are overweight has increased significantly faster among the poor in comparison to the non-poor over the past decade," said Richard A. Miech, PhD, MPH, lead author of the study and an associate professor in the Johns Hopkins Bloomberg School of Public Healths Department of Mental Health.
The study authors analyzed four U.S. National Health and Nutrition Examination Surveys (NHANES)--1971-1974, 1976-1980, 1988-1994, 1999-2004. Children with a body mass index at or above the 95th percentile for their age and sex in the 2000 Centers for Disease Control and Prevention growth charts were classified as overweight. The authors found that 15- to 17-year-old adolescents with higher daily intake of calories from sweetened beverages were significantly more likely to be overweight. In addition, among high school adolescents, the percentage of daily calories from drinking sweetened beverages has increased by more than 20 percent over the past decade (from 10.7 percent to 13.2 percent). Sweetened beverage consumption also increased at a faster rate among poor versus non-poor adolescents (67 percent versus 14 percent). Today, high school adolescents who live below the poverty line are more likely to be physically inactive and also more likely to skip breakfast, both of which are associated with excessive weight gain. The researchers did not see this same trend in adolescents aged 12-14. However, non-poor black adolescents in this age range were more likely to be overweight than their poor counterparts.
Kenna L. Lowe | EurekAlert!
Do microplastics harbour additional risks by colonization with harmful bacteria?
05.04.2018 | Leibniz-Institut für Ostseeforschung Warnemünde
Rutgers-led innovation could spur faster, cheaper, nano-based manufacturing
14.02.2018 | Rutgers University
University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.
Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.
Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.
Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...
In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...
13.04.2018 | Event News
12.04.2018 | Event News
09.04.2018 | Event News
20.04.2018 | Physics and Astronomy
20.04.2018 | Interdisciplinary Research
20.04.2018 | Physics and Astronomy