Hard evidence has now been found that taking small amounts of fish oil daily reduces joint pain in osteoarthritis patients. A two-year study showed that it can reduce the pain and inflammation caused by osteoarthritis. Researchers from several universities and hospitals in Australia and Tasmania studied 200 patients with an average age of 60. They discovered that those on a low dose had double the reduction in knee pain of patients on higher doses and also had significantly greater improvements in mobility, the Daily Mail reported. In their report the researchers said that 'high doses were not superior to low doses' but they were still unsure why.