Watercress: A $2 Leafy Green With High Nutrient Density and Potential Health Benefits Watercress Ranks as Top Nutrient-Dense Vegetable, According to CDC Watercress, an aquatic leafy green in the mustard family, has been ranked as the most nutrient-dense vegetable by the U.S. Centers for Disease Control and Prevention, according to a report published by the Daily Mail. The CDC gave watercress a perfect score of 100 out of 100 among a ranking of 47 fruits and vegetables. The vegetable typically costs between $2 and $5 per bunch at grocery stores, nutrition experts stated. According to Kristen Smith, a spokesperson for…

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