Raspberry is one of the best sources of fiber among all berries. It is rich in vitamin C and stands on top among commonly consumed fruits when it comes to antioxidant activity. Like other berries, it is good for diabetes treatment and lowering blood sugar. Another compound present in raspberry is tannin, lowering absorption of carbs after a meal. Raspberry can have anti-inflammatory benefits, keeps heart health in check and can help treat arthritis symptoms and development.