Superfoods are foods that give your body an extra boost of nutrition. Superfood lists seem to vary from year to year, but mushrooms are always a staple. Superfoods all have a few things in common. They are usually plant-based foods, with the addition of omega-rich seafood, whole grains, and low-fat dairy. The common denominator is that all the foods on the lists are nutrient-dense and provide a wide range of health benefits, such as anti-inflammatory properties or antibacterial components.