According to the FDA eating 1.5 ounces per day of nuts containing healthy fats such as hazelnuts as part of a diet low in saturated fat and cholesterol may reduce the risk of heart disease. Hazelnuts are also number one among tree nuts in folate content with 8% of your daily value per serving. Healthful diets with adequate folate may help to reduce the risk of cardiovascular disease and depression.
One serving of hazelnuts supplies over 25% of the Daily Recommended Intake (DRI) for copper and more than 90% of the DRI for manganese. Copper is needed for iron absorption and manganese is necessary for bone formation.Also, a one-ounce serving of raw hazelnuts contains 20% of your daily recommended value of the antioxidant vitamin E.