Olives are a great source of monounsaturated fats, which are considered heart-healthy fats. These fats can help reduce bad cholesterol levels and promote cardiovascular health. Additionally, olives are rich in antioxidants, such as vitamin E and polyphenols, which can have anti-inflammatory properties and protect cells from oxidative damage. Just remember that olives are typically high in sodium, so it's good to enjoy them in moderation as part of a balanced diet.