According to Washington Red Raspberry Commission, 100 percent undiluted raspberry juice is a source of ellagic acid, which is a phenolic compound known for its anti-carcinogenic properties. It is also a source of anthocyanins, which are antioxidants that slow the effects of aging, prevent cancer and reduces the risk of heart disease. The Harvard School of Public Health suggests that anthocyanins may also reduce your risk of developing Parkinson’s disease. Raspberry juice is a source of salicylic acid, a compound similar to aspirin, which may prevent hardening of the arteries. The vitamin C in raspberry juice also has an antihistamine effect on your body.