In 2014, William Paterson University named watercress its top superfood (out of 41 powerhouse fruits and veggies) in terms of its disease-fighting nutrient profile. The low-cal veggie (just 4 calories per chopped cup) is grown in natural spring water, and has high levels of nitrates, which have been shown to lower blood pressure, Elkaim says. The alpha-lipoic acid in watercress lowers glucose levels, and it has high levels of vitamins C, K, and A, which prevent oxidative stress. Watercress is also known for being a diuretic, a digestive aid, and for its ability to speed up recovery time post-workout.
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