What is the best salad

The CDC determined the nutritional density of these greens by looking at how well they fulfilled the average person’s daily requirement for 17 important nutrients: potassium, fiber, protein, calcium, iron, thiamin, riboflavin, niacin, folate, zinc, and vitamins A, B, B, C, D, E, and K.

They assigned each food a specific nutrient density score, on a scale of zero to 100, that calculates to what extent 100 grams of each green includes the daily recommended amount of these 17 nutrients, assuming a 2,000 calorie diet.

Here’s what they found:

Iceberg

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Nutrient Density Score: 18.28Poor iceberg lettuce -- it doesn't have the best reputation. And while the salad green might be at the low-ranking end of this list, it still contains fiber, potassium, zinc, calcium, folate, Vitamin A, and Vitamin K. Plus, it has a high water content, which is always a good thing.

Spinach

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Nutrient Density Score: 86.43Spinach is a nutritional powerhouse. It's loaded with vitamin K and A, as well as manganese and folate.

Watercress

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Nutrient Density Score: 100Watercress contains 106 percent of your daily recommended intake for vitamin K, 22 percent for vitamin A and 24 percent for vitamin C. It also contains calcium, iron and magnesium.

Knowledge is power. Now go make some salads!

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