Butterhead

This type of lettuce has large leaves that are arranged loosely and are easily separated from its stem. It has a softer texture with a sweet flavor compared to its other cousins. It is a rich source of vitamin K. Vitamin K has a potential role in the bone metabolism where it thought to increase bone mass by promoting osteotrophic activity inside the bone cells. It also has established role in Alzheimers disease patients by limiting neuronal damage in the brain.