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Grape consumption may offer benefits for symptomatic knee osteoarthritis
Date:5/9/2014

Fresno, CA New research presented last week at the Experimental Biology conference in San Diego, California, suggests that regular grape consumption may help alleviate pain associated with symptomatic osteoarthritis of the knee, and improve joint flexibility and overall mobility. Researchers attribute these potential benefits to the polyphenols found in grapes.

The sixteen week clinical study, undertaken by Texas Woman's University, was designed to investigate the benefits of grape consumption on inflammation and osteoarthritis outcomes. 72 men and women with knee osteoarthritis (OA) were assigned to either consume grapes in the form of a whole grape freeze-dried powder, or a placebo powder.

The study results, presented by lead investigator Shanil Juma, Ph.D., showed that both men and women consuming a grape-enriched diet had a significant decrease in self-reported pain related to activity and an overall decrease in total knee symptoms. This beneficial effect was more pronounced in females. Additionally, age-related differences were observed: there was a 70% increase in very hard activity for those under 64 years of age consuming the grape powder, while those receiving the placebo reported a significant decrease in very hard activity. Participants over 65 years, whether consuming grapes or the placebo, reported a decline in moderate to hard activities.

Evidence of increased cartilage metabolism was observed in men consuming the grape-enriched diet; they had higher levels of an important cartilage growth factor (IGF-1) than those on placebo. This protective effect was not observed in the females. The researchers noted that no difference in range of motion was observed for either the grape group or the placebo group. The serum marker for inflammation (IL1-β) measured was increased in both placebo and grape groups, although much less of an increase was observed in the grape group.

"These findings provide promis
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Contact: Courtney Romano
courtneyromano@comcast.net
425-889-8817
California Table Grape Commission
Source:Eurekalert

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