[sidebar]Here are four heart-friendly snacks you can feel good about:  Guacamole Dip in—snacks full of avocados are a great source of heart-healthy monounsaturated fat, says Kris-Etherton. Dark Chocolate “An ounce of dark chocolate contains 10 times more antioxidants than a strawberry,” says Kris-Etherton. “In addition, my research shows that a diet containing about an ounce of chocolate a day increases good cholesterol and prevents bad cholesterol from oxidizing, a process that may lead to heart disease.” Nuts Because they’re rich in healthy fats, vitamin E, and phytochemicals, having a handful of nuts—peanuts, almonds, even cashews—more than twice a week appears to lower your risk of heart disease. Shrimp Yes, it’s high in cholesterol. “But the omega-3 fatty acids and other nutrients that you get from shrimp still make it a good, very low cal snack,” says Kris-Etherton. More from Prevention: 10 Delicious Ways To Lower Your Blood Pressure