Why It's Healthy: Tomatoes are packed with vitamin C: One medium-sized tomato has 28 percent of the RDA. Avocado oil is one of the heart healthiest oils because it contains omega-9 fatty acid, also called Oleic acid, which is heart healthy. It also has a high smoke point, making it best for cooking at high heat. Broccoli is one of the only dark veggies that contains calcium. Why It Works for Weight Loss: The omega-9 fatty acid in avocado oil helps your body learn to burn fat for fuel and healthy fat can keep you feeling fuller longer. Broccoli is a vegetable that is high in fiber and relatively low in carbs so it’s on most keto and paleo diet plans. Nicole Osinga