Understanding the Main Nutrients of Lettuce for a Healthy Diet
                                
                                
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                                    5 min read                                
                            
                                While iceberg lettuce has a reputation for low nutritional value, darker green varieties like romaine are true nutritional powerhouses. A single cup of romaine can deliver a significant portion of your daily vitamins A and K, highlighting what are the main nutrients of lettuce and how much they can vary by type.