Eggs provide protein, iodine, riboflavin, vitamin D, and significant quantities of vitamin B12, and vitamin A at 70 calories each.
Kale, a "superfood," provides fiber, potassium, vitamin C, vitamin K, and vitamin A in two cups for 50 calories.
In a half-cup serving, get 150 calories, fiber, iron, protein, vitamin B6, folate, and thiamine.
Two oysters include protein, choline, iron, selenium, copper, vitamin B12, and zinc for 40 calories.
Pumpkin offers 50 calories, fiber, iron, vitamin E, and vitamin A in a half-cup serving.
A three-ounce portion has 150 calories, a strong source of potassium, high protein, and vitamin D.
A cup of raw seaweed has 30 calories, iron, magnesium, vitamins C, K, and significant quantities of folate and iodine.
Two cups of spinach has 10 calories and is packed with iron, magnesium, folate, vitamin A, and vitamin K.
Swiss chard, like other leafy greens, has 15 calories per cup and is rich in magnesium, vitamin E, C, and A.