Dark Chocolate
Good news for chocoholics: The cocoa in dark chocolate contains bioactive compounds, such as flavonols and antioxidants, which improve blood flow and reduce blood pressure. The higher the cocoa content you eat, the greater the benefits: In one study, those who took cocoa supplements were 27% less likely to die of cardiovascular disease.
Chia Seeds
These seeds are tiny but mighty. They contain several functional components that contribute to heart health, including a wealth of omega-3 fatty acids, polyphenols, vitamins, and minerals that have been shown to decrease triglycerides and control LDL (bad) cholesterol. They also contain an antioxidant called quercetin, which has been shown to reduce the danger of heart disease, according to a study published in Food Science & Nutrition.