Which superfood is the healthiest?

Berries are a superfood, high in fiber, and their rich colors mean they are high in antioxidants and disease-fighting nutrients. Fish can be a good source of protein and omega-3 fatty acids, which help prevent heart disease. Leafy greens are a good source of vitamin A, vitamin C, and calcium, as well as several phytochemicals. Nuts are a good source of plant protein and contain monounsaturated fats, which may be a factor in reducing the risk of heart disease. Olive oil is a good source of vitamin E, polyphenols, and monounsaturated fatty acids, all which help reduce the risk of heart disease. Whole grains are a good source of both soluble and insoluble fiber, whole grains also contain several B vitamins, minerals, and phytonutrients. Yogurt is a good source of calcium and protein, yogurt also contains live cultures called probiotics. Cruciferous vegetables are an excellent source of fiber, vitamins, and phytochemicals including indoles, thiocyanates, and nitriles, which may prevent against some types of cancer. Legumes are an excellent source of fiber, folate, and plant-based protein. Tomatoes are high in vitamin C and lycopene, which has been shown to reduce the risk of prostate cancer.