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I recently have been adding fresh greens (romaine, spinach, etc.) to my meals by cooking it in a small amount of margarine on the stove. I enjoy the added texture/color of this, and it enhances some of my existing recipes. Am I sacrificing any nutritional value by cooking the lettuce (such as red lettuce) for short periods of time? Are there other greens you recommend to use like this?

Last Updated: May 10, 2010

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Leafy green vegetables are often noted for their high nutrient content. They are packed with vitamin A, C, and K, folate, potassium, magnesium, iron, and phytochemicals. As a general rule, darker greens tend to have more nutrients. Some nutrient loss is inevitable in processing and cooking vegetables. Several factors lead to nutrient loss, including soaking in water, high heat, prolonged cooking, exposure to oxygen, and alkali (baking soda). Most nutrient loss can be avoided by understanding how these six factors affect vegetables. Adding cooked greens to your meals is a great way to reach the recommended 2½ cups of vegetables a day. Continue adding greens to your meals; try darker greens like spinach, collards, or kale to get more nutrients. Cook lightly or try raw greens in a salad. Most of all, work toward eating a variety of fruits or vegetables a day.

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