Mustard greens contain many health-boosting antioxidants like beta carotene, which can protect your skin and lower risk factors of diabetes. The greens are also a great source of several B vitamins, including thiamine (B1,) niacin (B3,) and pyridoxine (B6.) A serving also offers high amounts of: Vitamin K. Mustard greens support liver health due to their anti-inflammatory effects and because they’re high in plant chlorophyll, which is beneficial for detoxification. They also possess a distinct ability to neutralize heavy metals, chemicals and pesticides that are in your body