What is watercress considered? The Underrated Aquatic Superfood
                                
                                
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                                    3 min read                                
                            
                                In a 2014 ranking of 'powerhouse fruits and vegetables,' the Centers for Disease Control and Prevention awarded watercress a perfect nutrient-density score of 100. But beyond being the 'healthiest vegetable,' what is watercress considered by culinary and medical experts? It is a potent, semi-aquatic plant with a long history of use as both a food and a medicinal herb.