Calories: 15 per cup

Meaty and incredibly low-cal, mushrooms are also incredibly diverse. White button, Portobello, shiitake, and Maitake are just a few of the varieties you’ll find in your grocery store. Fortunately, just about all mushrooms contain some form of immune-boosting antioxidants, along with potassium, B vitamins, and fiber.

Shiitakes, for example, contain lentinan, a nutrient that is thought to have anticancer properties. All mushrooms are good sources of vitamin D, thiamin, riboflavin, niacin, vitamin B6, pantothenic acid, phosphorus, potassium, copper and selenium.

Try this recipe: Vegetarian Stuffed Mushrooms