Research now has proven that certain nuts can be the best heart-healthy foods. “The FDA approved the heart-health claim for almonds, hazelnuts, peanuts, pecans, some pine nuts, pistachios and walnuts, as these nuts contain less than 4 grams of saturated fats per 50 grams of total fat,” said registered dietitian Indi Maharaj with Erlanger’s Chattanooga LifeStyle Center.