At the recent annual meeting of the American College of Cardiology, the best heart-healthy snacks were recommended to keep the vascular system in tip-top shape.No. 1 Heart Healthy Snack (Top of the list): Raisins! They are high in antioxidants (to protect your arteries!), potassium (300 mg in a small box), and a good fiber source.No. 2 Heart Healthy Snack: Soy foods. This includes soy milk (use in a fruit smoothie), soy cheese (a topper for whole-grain crackers), soy nuts, and oven-roasted edamame. Soy provides isoflavones for heart health.No. 3 Heart Healthy Snack: Walnuts. These nuts are packed with potassium to lower blood pressure, as well as healthy monounsaturated oils. Also considered a great brain food!No. 4 Heart Healthy Snacks: Avocados. This fruit has monounsaturated fats to lower cholesterol, and more potassium than a banana (700 mg for 1 cup of sliced avocado).No. 5 Heart Healthy Snacks: High-fiber foods in general. This includes whole-grains such as oats (oat snack bars), multi-grain crackers and pretzels, popcorn, fruits and vegetables. Fiber can bind cholesterol in the intestinal tract, and may help with weight control.