Mustard leaves are high in calcium, copper, and vitamins C, A, and K. They are also packed with antioxidants and may help with lowering blood sugar, protect against infections, and may even protect against some forms of cancer. Mustard may also help with muscle pain and body aches among other things. Studies are limited as to the levels of these benefits, however, mustard has been used in culinary and medicinal practices for centuries plus, it tastes delicious! It’s also considered “free” on the plan however, overconsumption may cause side effects so make sure to have it in moderation.