But it has half the calories of an equal serving of romaine lettuce, and about 40% of the calories you'd get in an equal serving of iceberg lettuce. It also has vitamin a and vitamin k in ample amounts.
[header] How to choose the healthiest salad greens [title] Look for low-calorie greens. [step] If your idea of healthy is synonymous with low in calories, you might choose red leaf lettuce. This lettuce, like all varieties of lettuce, is mostly water.