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More benefits emerging for one type of omega-3 fatty acid: DHA
Date:1/23/2014

OSU researchers say, are the amount of supplements used and the relative abundance of two common omega-3s DHA and EPA. Studies at OSU have concluded that DHA has far more ability than EPA to prevent the formation of harmful metabolites. In one study, it was found that DHA supplementation reduced the proteins involved in liver fibrosis by more than 65 percent.

These research efforts, done with laboratory animals, used a level of DHA supplementation that would equate to about 2-4 grams per day for an average person. In the diet, the most common source of DHA is fatty fish, such as salmon, mackerel or sardines.

The most recent research is beginning to break down the specific processes by which these metabolic changes take place. If anything, the results suggest that DHA may have even more health value than previously thought.

"A lot of work has been done on fatty liver disease, and we are just beginning to explore the potential for DHA in preventing or slowing disease progression," said Jump, who is also a principal investigator in OSU's Linus Pauling Institute.

"Fish oils, a common supplement used to provide omega-3, are also not prescribed to regulate blood glucose levels in diabetic patients," he said. "But our studies suggest that DHA may reduce the formation of harmful glucose metabolites linked to diabetic complications."

Both diabetes and liver disease are increasing steadily in the United States.

The American Liver Foundation has estimated that about 25 percent of the nation's population, and 75 percent of those who are obese, have nonalcoholic fatty liver disease. This can progress to nonalcoholic steatohepatitis, cirrhosis and cancer.

This study established that the main target of DHA in the liver is the control of inflammation, oxidative stress and fibrosis, which are the characteristics of more progressively serious liver problems. Omega-3 fatty acids appear to keep cells from responding to and
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Contact: Donald Jump
Donald.jump@oregonstate.edu
541-737-4007
Oregon State University
Source:Eurekalert

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