With super-sized portions, sugary soft drinks and physical inactivity, obesity is on the rise and showing no sign of slowing. Studies report that the prevalence of obesity has doubled in the U.S. over the past 25 years. As obesity rates have soared, so has the incidence of NAFLD, making it the most prevalent liver disease in the U.S.
NAFLD is a chronic form of liver disease that includes such conditions as steatosis without fibrosis, nonalcoholic steatohepatitis (NASH) with fibrosis, and cirrhosis. Fibrosis is the progressive scarring of the liver with stages ranging from zero to four (cirrhosis). Medical evidence has found that patients with simple steatosis have a better prognosis than those with NASH, which could progress to end-stage liver disease.
Lead investigator Dr. W. Kim Ray from the Mayo Clinic in Rochester, Minn. explains, "The effect of NAFLD on public health is not well understood. Large, population-based studies, which can provide insight into disease activity, present some difficulty given that liver biopsy is required to confirm NAFLD."
To investigate the long-term impact of NAFLD on mortality, the team used data from the National Health and Nutrition Examination Survey (NHANES)—a survey by the National Center for Health Statistics in conjunction with the Centers for Disease Control and Prevention (CDC) that was conducted from 1988 to 1994 with mortality follow-up through 2006. NAFLD was diagnosed by ultrasound and severity of fibrosis was measured by non-invasive fibrosis markers such as the NAFLD fibrosis score (NFS).
Findings indicate that of the 11,154 participants, 34% had NAFLD, with 72% of these patients having a NFS that indicated lack of significant fibrosis (NFS less than -1.455) and 3% with advanced fibrosis (NFS greater than 0.676). NAFLD was not associated with higher mortality risk after a median of 15 years of follow-up.
Further analysis shows that mortality increases as fibrosis advances. In fact, patients likely to progress to advanced fibrosis had a 69% increase in mortality compared to those without fibrosis. Higher mortality in those with advanced fibrosis was largely due to cardiovascular causes, more than expected from conditions common in patients with NAFLD such as high blood pressure or high levels of cholesterol. "Our findings confirm that NAFLD patients without advanced fibrosis do not have higher mortality risk," concludes Dr. Kim. "Careful monitoring of disease progression in patients with NAFLD and fibrosis, along with interventions that reduce cardiovascular risk factors are warranted."
This study is published in Hepatology. Media wishing to receive a PDF of this article may contact firstname.lastname@example.org.
Full citation: "Association Between Noninvasive Fibrosis Markers and Mortality Among Adults with Non-alcoholic Fatty Liver Disease in the United States." Donghee Kim, W. Ray Kim, Hwa Jung Kim and Terry M. Therneau. Hepatology; (DOI: 10.1002/hep.26156) Print Issue Date: April, 2013.
Author Contact: Media wishing to speak with Dr. Kim may contact Brian Kilen with the Mayo Clinic at email@example.com or at +1 507-266-1161.About the Journal
Founded in 1807, John Wiley & Sons, Inc. (NYSE: JWa, JWb), has been a valued source of information and understanding for more than 200 years, helping people around the world meet their needs and fulfill their aspirations. Wiley and its acquired companies have published the works of more than 450 Nobel laureates in all categories: Literature, Economics, Physiology or Medicine, Physics, Chemistry, and Peace. Wiley's global headquarters are located in Hoboken, New Jersey, with operations in the U.S., Europe, Asia, Canada, and Australia. The Company's website can be accessed at http://www.wiley.com.
Dawn Peters | EurekAlert!
Drone vs. truck deliveries: Which create less carbon pollution?
31.05.2017 | University of Washington
New study: How does Europe become a leading player for software and IT services?
03.04.2017 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)
An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.
Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...
Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.
Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...
Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.
As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...
Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.
With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...
Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine
Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...
19.06.2017 | Event News
13.06.2017 | Event News
13.06.2017 | Event News
23.06.2017 | Physics and Astronomy
23.06.2017 | Physics and Astronomy
23.06.2017 | Information Technology