Eating lemons regularly supplies your body with vitamin C and antioxidants that support heart health and prevent cell damage. Lemons (Citrus limon) are a citrus fruit packed with vitamin C and antioxidants that support heart health and enhance iron absorption. Support for Heart HealthLemons are rich in vitamin C and other antioxidants that support heart health. Antioxidants in lemons help prevent cell damage associated with heart disease, kidney disease, cancer, and chronic obstructive pulmonary disease (COPD). Tips for Adding Lemons to Your DietAdding lemons to your diet helps increase your vitamin C and antioxidant intake to support your overall health.