Tart cherry juice potentially helps alleviate symptoms of mild to moderate knee osteoarthritis and decreases the levels of high sensitivity C-reactive protein.
Randomised Controlled Trial CRP Knee Osteoarthritis
The study involved 58 non-diabetic participants with grade 2-3 osteoarthritis as categorized by Kellgren. Participants were randomly assigned to consume two 8-ounce bottles of either tart cherry juice or a placebo daily for six weeks. There was a one-week washout period before participants switched to the alternate treatment in a crossover design. The research measured participants' Western Ontario McMaster Osteoarthritis Index scores and walking times before and after each treatment. Levels of plasma urate, creatinine, and high sensitivity C-reactive protein were also noted at baseline and after each treatment. Acetaminophen was permitted as a rescue drug with self-reporting after each treatment period.
There was a noticeable reduction in Western Ontario McMaster Osteoarthritis Index scores following the cherry juice treatment, an effect not observed with the placebo. High sensitivity C-reactive protein also showed a decrease during the cherry juice treatment. The reduction in high sensitivity C-reactive protein was consistent with the improvement observed in osteoarthritis index scores. However, consumption of tart cherry juice didn't significantly affect walking time, usage of acetaminophen, or plasma urate and creatinine levels.
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