The study led by Barry Popkin, Ph.D., W.R. Kenan Jr. Distinguished Professor of nutrition at UNC's Gillings School of Global Public Health, and Chinese researchers, used data from the China Health and Nutrition Survey (CHNS), the longest ongoing study of its kind in China. Between 1989 and 2011, the study followed more than 29,000 people in 300 communities throughout China, with surveys conducted in 1989, 1991, 1993, 1997, 2000, 2004, 2006, 2009 and 2011. The CHNS project was a joint undertaking by the University of North Carolina at Chapel Hill and the Chinese Center for Disease Control (CCDC) National Institute of Nutrition and Food Safety.
The findings appear online in Obesity Reviews (www.obesityreviews.net) Early View Section and will be published in the September issue (Obesity Reviews Volume 13, Issue 9, September 2012). Obesity Reviews is an official journal of the International Association for the Study of Obesity (IASO; http://www.iaso.org)
China has experienced unprecedented economic growth in the past two decades, but the study finds that at the same time, China has seen equally dramatic changes in the weight, diets and physical activity levels of its people. UNC-CCDC researchers followed a randomly selected sample representing 56 percent of the Chinese population in 2009 and found large increases in overweight and cardiometabolic risk factors.
"What is unprecedented is the changes in diet, weight and cardiovascular risk for children age 7 and older," said Popkin. "These estimates highlight the huge burden that China's health care system is expected to face if nothing changes."
The UNC-CCDC team observed rates of diabetes of 1.9 percent and pre-diabetes levels of 14.9 percent in Chinese children age 7-17. Researchers noted that high levels of glycosylated hemoglobin (HbA1c) were found in the children's blood. HbA1c is a measure of the average plasma-glucose concentration over time.
"The findings suggest a very high burden of chronic disease risk starting at a young age, with 1.7 million Chinese children ages 7-18 having diabetes and another 27.7 million considered prediabetic," Popkin said. "In addition, more than one-third of children under age 18 had high levels of at least one cardiometabolic risk factor."
Comparing the Chinese data with data from the United States based on National Health and Nutrition Survey (NHANES) results, the authors found that diabetes and inflammation rates were higher in the Chinese pediatric population than in the U.S. pediatric population or in other Asian countries. Researchers found 1.9 percent of Chinese children age 12-18 had diabetes, compared to 0.5 percent of children in the U.S. The study also found great disparity with respect to inflammation, a key cardiovascular risk factor; 12.1 percent of Chinese adolescents showed a high inflammation risk, compared to 8.5 percent of adolescents in the U.S.
"The number of individuals with high levels of at least one cardiovascular risk factor increased to 85 percent in individuals age 40 and older," said Penny Gordon-Larsen, Ph.D., professor of nutrition in UNC's Gillings School of Global Public Health. "Of even greater concern is the fact that we see these high levels of risk in individuals living across the entire country – in rural and urban, as well as high and low-income areas. So the impending health care costs and implications are immense."
These results reinforce earlier research by the authors that found higher levels of obesity emerging in the past decade among the poor and those living in rural areas of China.
The new study is titled "The expanding burden of cardiometabolic risk in China: the China Health and Nutrition Survey."
Research assistant professor of nutrition Shufa Du, Ph.D. and professor of nutrition Linda Adair, Ph.D., both of UNC's Gillings School of Global Public Health also co-authored the study.
Co-authors from China include Shegkai Yan, Guangzhou Improve Medical Instruments Co., Ltd., Guangzhou; Jiang Li, M.D., Department of Laboratory Medicine, China-Japan Friendship Hospital, Beijing; and Bing Zhang, Ph.D., Public Health Nutrition Department, National Institute of Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing.
The study is funded by the National Institutes of Health with additional funding from the CCDC.
Media Note: Popkin can be reached at (919) 966-1732 or firstname.lastname@example.org; Gordon-Larsen can be reached at (919) 843-9966; email@example.com
Chris Perry | EurekAlert!
Europe’s Demographic Future. Where the Regions Are Heading after a Decade of Crises
10.08.2017 | Berlin-Institut für Bevölkerung und Entwicklung
Scientists reveal source of human heartbeat in 3-D
07.08.2017 | University of Manchester
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
Researchers from the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science, the Italian Space Agency (ASI), and the Instituto Geofisico--Escuela Politecnica Nacional (IGEPN) of Ecuador, showed an increasing volcanic danger on Cotopaxi in Ecuador using a powerful technique known as Interferometric Synthetic Aperture Radar (InSAR).
The Andes region in which Cotopaxi volcano is located is known to contain some of the world's most serious volcanic hazard. A mid- to large-size eruption has...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
16.08.2017 | Physics and Astronomy
16.08.2017 | Materials Sciences
16.08.2017 | Interdisciplinary Research