Green Tea Extract May Prevent Fatty Liver

[Harry Hirsute]

22/01/2008 - Extracts from green tea may stop the build-up of fatty deposits in the liver, and offer benefits for this silent killer linked to obesity, suggests a new study with mice.

If the results can be translated to humans, green tea and its extracts could become a useful preventative in the development of fatty liver, a condition that is usually symptomless but said to increase the risk for liver inflammation, and ultimately results in liver failure.

Fatty liver is reportedly on the rise in the US, with between one quarter and one half of Americans, and the prevalence if nonalcoholic fatty liver disease (NAFLD) has increased in line with the ongoing obesity epidemic, state the researchers in the Journal of Nutrition.

Richard Bruno and colleagues from the University of Connecticut used genetically-obese mice (ob/ob) and, using lean mice as a comparison, fed them a diet containing zero, one, or two per cent green tea extract (GTE) for six weeks.

At the end of the study, the researchers report that the obese mice fed the GTE-supplemented diets had 23 to 25 per cent less body than the obese mice fed the non-supplemented diet. Moreover, the lean mice fed the GTE-supplemented diets had 11 to 20 per cent less body than their lean counterpart on the non-supplemented diet.

Measurements of the blood enzymes alanine aminotransferase and aspartate aminotransferase, used as markers of liver damage, showed that GTE-supplementation was associated with 30 to 41 per cent and 22 to 33 per cent lower activities, respectively.

It is also noted that no significant differences were observed in food intake between lean and obese animals in any group, a result that suggested the extract worked by decreasing intestinal fat absorption or altering liver fat metabolism.

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