5 Benefits, Nutrition, and Easy Ways To Eat It

Lettuce (Lactuca sativa L.) is a popular vegetable that is a staple in many people’s diets. Most types are packed with vitamins, minerals, and other protective substances that may have benefits for your overall health.

Eating more lettuce can boost your intake of essential nutrients, such as antioxidants, folate, and vitamin C.

Lettuce is a source of certain essential nutrients like folate and vitamin A.

Folate is a B vitamin needed for red blood cell development and cell division. During pregnancy, folate needs rise by 50%. One cup of romaine has 63.9 micrograms of folate, which meets 16% of the needs for non-pregnant and 11% for pregnant people.

Lettuce is also high in vitamin A, which supports growth, development, immune function, and more. Pregnant people need more vitamin A for fetal growth and their own health. One cup of romaine provides 205 micrograms of vitamin A, or 23% of the Daily Value (DV).

Lettuce contains smaller amounts of other vitamins and minerals, such as vitamin C and potassium.

Lettuce is packed with antioxidants like carotenoids, phenolic acids, and flavonoids. Antioxidants protect against cell damage by neutralizing highly reactive compounds called free radicals. 

When free radicals overwhelm the body’s defenses, it leads to oxidative stress. Oxidative stress accelerates aging and is linked to heart disease and certain cancers.

Eating antioxidant-rich foods like lettuce can help support antioxidant defenses and decrease disease risk. A 2024 review found that people with the highest carotenoid levels had a 24% reduced risk of breast cancer.

Carotenoids and polyphenols in lettuce may also help protect against eye disease, stroke, and neurodegenerative disease.

Water makes up between 94-95% of lettuce’s weight, which makes it a particularly hydrating food. Because it is so rich in water, lettuce is very low in calories, with fewer than 10 calories per cup.

Weight loss involves taking in fewer calories than you burn. Eating low-calorie, nutrient-rich foods like lettuce can help you control your weight.

Vitamin K is another nutrient found in high amounts in lettuce. Getting enough vitamin K is important for bone health.

Vitamin K has been shown to activate proteins that help build and maintain bones and regulate the breakdown and formation of new bone tissue.

Eating more raw vegetables may improve your mental health and protect against depression symptoms.

A 2018 study of 422 people found that those who ate more raw vegetables and fruit had lower rates of depression and higher positive moods and life satisfaction. The researchers reported that lettuce was among the top ten raw foods linked to better mental health outcomes.

The nutrition of lettuce varies, but most lettuces are a good source of vitamins and minerals.

The nutrition for a 1-cup serving of shredded romaine lettuce includes:

• Calories: 7.99
• Fat: 0.15 grams (g), or 0.19% of the Daily Value (DV)
• Sodium: 3.76 milligrams (mg), or 0.16% of the DV 
• Carbohydrates: 1.55 g, or 0.56% of the DV 
• Fiber: 0.98 g, or 3.5% of the DV 
• Added sugar: 0 g
• Protein: 0.57 g, or 1.14% of the DV 

Lettuce is a rich source of vitamins A and K and folate. It also provides smaller amounts of filling fiber, vitamins, and minerals, including potassium, iron, and vitamin C.

Lettuce is safe for most people to enjoy. Lettuce allergy is uncommon, but people with a condition called lipid transfer protein (LTP) sensitization may have a mild to severe allergy to lettuce.

Lettuce can also be contaminated with harmful bacteria that cause foodborne illness, such as E. coli, Listeria, Salmonella, and Cyclospora. Because of this contamination risk, it is important to rinse lettuce thoroughly before eating it.

Other ways to prevent bacterial contamination of lettuce include:

• Keep lettuce away from raw meat, poultry, and seafood.
• Refrigerate lettuce and salads within two hours of preparation.
• Store lettuce in the refrigerator in a clean container.
• Use separate cutting boards for raw vegetables.
• Wash and sanitize cutting boards, utensils, and kitchen surfaces before preparing lettuce.

Lettuce is popularly consumed in salads, but you can add it to a number of other recipes to boost texture, taste, and nutritional value.

Ways to enjoy lettuce include:

• Add fresh lettuce to rice and noodle bowls.
• Combine raw lettuce with other vegetables, like carrots, peppers, and cucumbers.
• Grill lettuce and top it with cheese and seeds or nuts.
• Stuff lettuce leaves with cooked ground chicken and vegetables.
• Use romaine to make homemade green juices and smoothies.

Lettuce is a leafy vegetable commonly enjoyed in dishes like salads and sandwiches. It is a good source of nutrients like vitamin A and folate and provides protective plant compounds. 

Adding more lettuce to your diet can protect your health and may lower your risk of certain cancers and heart disease.