Generally, leafy greens like kale, spinach and romaine lettuce are considered critical components of a nutritious diet. Yet ...

While it's got Vitamins A and K, it's lacking a real nutrient punch. Next is the perennial, burger-topping iceberg lettuce. You'll need 33 cups of the stuff to get your daily Vitamin C.

But now lunch shops and grocery stores have woken up to all the types of lettuce out there, and there are almost too many to ...

Don’t be too disheartened though, the iceberg lettuce does still contain small amounts of minerals and vitamins like calcium, vitamin C, vitamin K and iron. But when compared to protein-rich ...

What's with iceberg lettuce's reputation for not having nutritional value, then? "Other greens like romaine or arugula provide more protein, fiber, potassium, calcium and vitamin K, but that may ...