A diet packed with fruit, particularly blueberries, apples and grapes, is linked to a reduced risk of developing type-2 diabetes. A study, published in the British Medical Journal, suggests blueberries cut the risk by 26 per cent compared with two per cent for three servings of any whole fruit. However, fruit juice did not appear to have the same effect. The research looked into the diets of more than 187,000 people in the U.S., and showed that three servings per week of blueberries, grapes and raisins, and apples and pears significantly reduced the risk of type-2 diabetes. All fruit was shown to reduce the risk, but these fruits appeared to be particularly effective. In the study paper, the scientists wrote, "Fruits have highly variable contents of fibre, antioxidants, other nutrients, and phytochemicals that jointly may influence the risk."