Generally, leafy greens like kale, spinach and romaine lettuce are considered critical components of a nutritious diet. Yet one leafy green, iceberg lettuce, often gets the cold shoulder.

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.

man's hand holding head of iceberg lettuce outdoors - Dircinhasw/Getty Images "My Mom Called It 'Potluck Deluxe' — And I Still Make It": People Are Sharing The "Poor Man's Meals" They'll Always ...

The following factors increase the likelihood that lettuce will turn pink: The type of leafy green. Iceberg and romaine lettuces are most susceptible to turning pink, while other salad greens like ...

Iceberg has a good shelf-life and can be kept for up to seven days in the salad drawer of the refrigerator.

The much-besmirched iceberg lettuce is poised to take its place as the new trendy green of choice. Iceberg is already popping up on trendy restaurants' menus - which makes sense because it is ...

Iceberg lettuce is by far the most popular type of ... It's one of the most nutritious lettuce options and is "a versatile, iron-rich green that's often used in both raw and cooked dishes ...