Average retail price per pound: $1.87 frozen; $1.64 for fresh heads; and $2.57 for fresh florets

Megadoses of vitamin E can dramatically reduce inflammation, research shows. Great sources of this important vitamin are dark green veggies, such as broccoli. It is high in potassium and magnesium, both strong anti-inflammatory ingredients. Full of vitamins A, C and the antioxidant glutathione, broccoli is an immune-boosting basic, according to Kaiser.