Home > Heart Healthy Cooking > Foods That Reduce Stress Get the Flash Player to see this player. Rate: (Click the stars to rate) Published on Sep 12, 2010 by Cleveland Clinic, Views: 2747 Many healthy foods offer a subtle side-effect- they help relieve stress. Carolyn Snyder is a registered dietitian at Cleveland Clinic. A German study found vitamin C can help reduce stress and return blood pressure to normal levels, so foods like oranges are stress busters. Avocados are packed with potassium, which helps lower blood pressure, and pistachios and walnuts can have the same effect. Foods high in omega-3 fatty acids, like salmon, help keep stress hormones at bay as well.