May have anticancer effects

In addition to being strong in antioxidants, which may have anticancer properties, mustard greens are high in glucosinolates, a category of beneficial plant components. Glucosinolates have been found in laboratory experiments to help protect cells from DNA damage and to inhibit the formation of malignant cells. These advantages, however, have not been investigated in people. Similarly, mustard leaf extract was discovered to have anti-cancer properties in a test-tube investigation.

In terms of human research, observational studies have found a relationship between overall consumption of Brassica vegetables — but not mustard greens specifically — with a lower risk of various malignancies such as stomach, colorectal, and ovarian cancer.