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Coffee and tea may contribute to a healthy liver

Date:
August 16, 2013
Source:
Duke-NUS Graduate Medical School Singapore
Summary:
Scientists suggest that increased caffeine intake may reduce fatty liver in people with non-alcoholic fatty liver disease.

Surprise! Your morning cup of tea or coffee may be doing more than just perking you up before work.

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An international team of researchers led by Duke-NUS Graduate Medical School (Duke-NUS) and the Duke University School of Medicine suggest that increased caffeine intake may reduce fatty liver in people with non-alcoholic fatty liver disease (NAFLD).

Worldwide, 70 percent of people diagnosed with diabetes and obesity have NAFLD, the major cause of fatty liver not due to excessive alcohol consumption. It is estimated that 30 percent of adults in the United States have this condition, and its prevalence is rising in Singapore. There are no effective treatments for NAFLD except diet and exercise.

Using cell culture and mouse models, the study authors -- led by Paul Yen, M.D., associate professor and research fellow, and Rohit Sinha, Ph.D of the Duke-NUS Graduate Medical School's Cardiovascular and Metabolic Disorders Program in Singapore -- observed that caffeine stimulates the metabolization of lipids stored in liver cells and decreased the fatty liver of mice that were fed a high-fat diet. These findings suggest that consuming the equivalent caffeine intake of four cups of coffee or tea a day may be beneficial in preventing and protecting against the progression of NAFLD in humans.

The findings will be published in the September issue of the journal Hepatology.

"This is the first detailed study of the mechanism for caffeine action on lipids in liver and the results are very interesting," Yen said. "Coffee and tea are so commonly consumed and the notion that they may be therapeutic, especially since they have a reputation for being "bad" for health, is especially enlightening."

The team said this research could lead to the development of caffeine-like drugs that do not have the usual side effects related to caffeine, but retain its therapeutic effects on the liver. It could serve as a starting point for studies on the full benefits of caffeine and related therapeutics in humans.

In addition to Yen and Sinha, collaborators included Christopher Newgard, PhD, director of the Sarah W. Stedman Nutrition and Metabolism Center at Duke University School of Medicine, where the metabolomics analysis of the data was conducted.

The study was supported by funding from Singapore's Agency for Science, Technology, and Research; the Ministry of Health; and the Ministry of Education.


Story Source:

The above story is based on materials provided by Duke-NUS Graduate Medical School Singapore. Note: Materials may be edited for content and length.


Journal Reference:

  1. Rohit Anthony Sinha, Benjamin L. Farah, Brijesh K. Singh, Monowarul Mobin Siddique, Ying Li, Yajun Wu, Olga R. Ilkayeva, Jessica Gooding, Jianhong Ching, Jin Zhou, Laura Martinez, Sherwin Xie, Boon-Huat Bay, Scott A. Summers, Christopher B. Newgard, Paul M. Yen. Caffeine stimulates hepatic lipid metabolism via autophagy-lysosomal pathway. Hepatology, 2013; DOI: 10.1002/hep.26667

Cite This Page:

Duke-NUS Graduate Medical School Singapore. "Coffee and tea may contribute to a healthy liver." ScienceDaily. ScienceDaily, 16 August 2013. <www.sciencedaily.com/releases/2013/08/130816153019.htm>.
Duke-NUS Graduate Medical School Singapore. (2013, August 16). Coffee and tea may contribute to a healthy liver. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2013/08/130816153019.htm
Duke-NUS Graduate Medical School Singapore. "Coffee and tea may contribute to a healthy liver." ScienceDaily. www.sciencedaily.com/releases/2013/08/130816153019.htm (accessed November 26, 2014).

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