Raisins are a good source of soluble fibre, which aids our digestion and reduces stomach issues. Raisins also contain tartaric acid. Research shows this protein may have anti-inflammatory properties, improve intestinal function, and help regulate the balance of bacteria in your gut. Raisins can lower your risk of heart disease by reducing blood pressure and blood sugar. The fibre in raisins works to lower your LDL (bad) cholesterol, which reduces strain on your heart.