Vitamin A

Add iceberg lettuce to your diet, and youll also boost your intake of vitamin A. Like vitamin K, vitamin A contributes to the health of your skeleton it regulates bone growth. Consuming enough vitamin A also supports the health of your skin, eyes and blood. A 2cup serving of iceberg lettuce boasts 722 international units of vitamin A. This contributes 31 percent of the recommended daily intake for women and 24 percent for men.