close-up of swiss chard leaves: leafy green high-fiber vegetables

among antioxidant antioxidants background bietola board calories chard close-up compound concept diet fiber flavonoids focus food foods green healthy high-fiber horizontal image iron leaf leafy leaves lifestyle low magnesium making mangold mediterranean minerals most nutrient-dense nutrition plant potassium powerful rich salad selective swiss vegetable vegetables vitamin vitamins weight-loss-friendly weightloss white wood