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Duke medical researchers published a report in the Archives of Internal Medicine claiming that exercise can treat depression. After studying 156 elderly patients diagnosed with clinical depression, the investigators concluded that 30 minutes of exercise three times a week can be as effective as taking various anti-depressant drugs.

Children with juvenile arthritis who took part in an eight-week individualized program of resistance exercise improved their ability to function by as much as 200 percent, according to researchers at the University of Buffalo. Furthermore, the program decreased their pain, disability and use of medication. Researchers believe that the benefits came about as a result of a change that the exercise made in the immune response. Juvenile arthritis is a form of rheumatoid arthritis, a disease that causes the body's autoimmune system to attack joints and surrounding tissue.

Professor Will Winder, a researcher at Brigham Young University, has conducted a study that proves exercise can help prevent the onset of Type II diabetes. This is because exercise helps muscles absorb glucose, Winder reported.

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