Here's which types of lettuce are most popular, why these greens are good for you and what you need to be mindful of as you include more in your diet.

It’s easy to spot the difference: Iceberg features pale green leaves that grow in a round formation, whereas Romaine lettuce grows in an upright position with dark green, elongated leaves.

Romaine lettuce is also commonly known as cos lettuce ... While most well-known for long green leaves, there are romaine varieties that stray from the norm you see in most stores.

During oxidation, some of the healthy polyphenols in the leaves transform ... the likelihood that lettuce will turn pink: The type of leafy green. Iceberg and romaine lettuces are most susceptible ...

Romaine lettuce comes in second at 35% ... one of these varieties along with mustard greens, endives, red and green oak leaf and little gem lettuce. While many of these nutrients are in any ...