Could boost immunity

Mustard greens may be beneficial to your immune system as well. One cup (56 grams raw, 140 grams cooked) contains more than one-third of your daily vitamin C requirements. Vitamin C is a water-soluble vitamin that is necessary for a healthy immune system. According to research, not receiving enough vitamin C in your diet might weaken your immune system, leaving you more prone to illness.

Furthermore, the vitamin A in mustard greens helps your immune system. It accomplishes this by encouraging the formation and dispersion of T cells, a kind of white blood cell required to help fight off possible infections.