Very high in nutrients like Vitamins C and A, folate, and magnesium, researchers have found that spinach may help protect the brain from oxidative stress and may reduce the effects of age-related related declines in brain function. Another nutrient found in spinach, lutein, helps protect against eye diseases such as age-related macular degeneration and cataracts. When cooked, spinach is an excellent source of iron. With so many healthful reasons to eat spinach, it’s easy to see why it’s popular in salads, pastas, quiches, dips, and side dishes.