Which fruit has one of the highest ORAC ratings among non-herbal foods and a low glycemic index?

• A. Watermelon
• B. Mango
• C. Blueberries
• D. Bananas

Answer: (C)

Blueberries stand out because they combine very high antioxidant capacity with a relatively low impact on blood sugar. ORAC measures how well a food can neutralize free radicals, and blueberries are among the top non-herbal foods thanks to their rich polyphenol content, especially anthocyanins. At the same time, their glycemic index is typically in the mid-50s, meaning they cause a more gradual rise in blood glucose compared with many other fruits. Watermelon tends to spike blood sugar more despite lower antioxidant levels, while mango and bananas can have higher GI values or lower antioxidant density. So the strong antioxidant profile plus the lower glycemic response makes blueberries the best fit for this combination.