FoodScore
0/ 100
Goodvegetable· 100 g

Romaine Lettuce

Romaine lettuce is a good choice for overall health, scoring 62/100. Its minimally processed nature and micronutrient content are key contributors to its positive rating.

  • Romaine lettuce is a minimally processed whole food, classified as NOVA 1.
  • It contains 260.4mg of potassium per 100g, contributing to daily electrolyte needs.
  • With 0 calories and 0g of added sugar per 100g, it's a low-energy-density food.
  • It provides 0.98g of protein per 100g, a modest contribution to daily intake.
  • This vegetable has a FoodScore of 62/100, indicating a good nutritional profile.
  • Scores -3 points above the vegetable category average (65/100 across 68 foods).
Fiber
0g
0% of Daily Value
Protein
0.98g
2% of Daily Value
Added sugar
0g
0% of Daily Value
Sodium
23mg
1% of Daily Value
+
What it brings to the table
Micronutrients (Vitamin K)+2
Whole food (NOVA 1)+10
−
What holds it back

Nothing significantly penalised here. Well done.

Why it scores 62

Romaine lettuce earns a 'Good' FoodScore of 62 out of 100, primarily due to its status as a minimally processed whole food. Its NOVA class 1 designation contributes a significant +10 bonus to its score, reflecting its natural state and lack of industrial processing. The presence of beneficial micronutrients, particularly Vitamin K, adds another +2 bonus. Romaine lettuce contains 0 calories, 0g of added sugar, and 0g of saturated or trans fats, which are all favorable attributes that prevent any penalties. While it offers some potassium (260.4mg) and a small amount of protein (0.98g), it lacks significant amounts of fiber, which would typically boost the score for a vegetable. To achieve a higher score, romaine lettuce would need to provide more substantial amounts of dietary fiber or a broader spectrum of vitamins and minerals in higher percentages of the Daily Value. Its current profile makes it a healthy, but not exceptionally nutrient-dense, food.

Health benefits

What the nutrients in romaine lettuce actually do for you, grounded in established dietary science.

Supports Hydration and Electrolyte Balance

Romaine lettuce is composed mostly of water, making it an excellent food for maintaining hydration. Adequate hydration is crucial for numerous bodily functions, including nutrient transport and temperature regulation. Additionally, it provides 260.4mg of potassium per 100g serving, which is 6% of the Daily Value. Potassium is an essential electrolyte that works with sodium to balance fluids and support nerve signals and muscle contractions. While not a primary source, regular consumption of potassium-rich foods like romaine contributes to overall electrolyte balance, which is important for active individuals or those seeking to increase their intake of hydrating foods.

Aids in Weight Management

Romaine lettuce is an ideal food for weight management due to its extremely low calorie count and high water content. A 100g serving contains 0 calories, allowing individuals to consume a significant volume of food without contributing substantially to their caloric intake. Foods with low energy density, like romaine, can help promote satiety and reduce overall calorie consumption by filling the stomach with fewer calories. While it doesn't provide significant protein or fiber for sustained fullness, its bulk can be a valuable tool in creating satisfying meals that support a calorie-controlled diet. Incorporating large portions of romaine into meals can help individuals feel fuller with fewer calories.

Contributes to Bone Health

Romaine lettuce contributes to bone health primarily through its content of Vitamin K. Although not explicitly listed in the provided micronutrient data, leafy greens like romaine are well-known sources of Vitamin K, which is essential for bone metabolism. Vitamin K plays a critical role in the activation of proteins involved in bone mineralization, such as osteocalcin. While the calcium content in 100g (27.56mg, 2% DV) is modest, the combination of Vitamin K and other trace minerals like magnesium (12.05mg, 3% DV) supports the overall framework for strong bones. Regular intake of Vitamin K from foods like romaine is emphasized in dietary guidelines for maintaining skeletal integrity.

Supports Overall Nutrient Intake

While not a powerhouse for any single micronutrient, romaine lettuce contributes to overall nutrient intake by providing a range of vitamins and minerals in small amounts. A 100g serving offers 2% of the Daily Value for calcium and iron, and 3% for magnesium. These minerals are vital for various bodily functions, including muscle function, nerve transmission, and oxygen transport. The cumulative effect of consuming diverse plant foods, even those with lower individual nutrient densities, is important for meeting daily micronutrient requirements. Romaine lettuce serves as a valuable base in meals, allowing for the addition of other nutrient-dense ingredients.

How to eat it

Romaine lettuce is a versatile, crisp leafy green that forms the base of many salads in the US diet. Its mild flavor and sturdy texture make it suitable for a variety of culinary applications, from wraps to grilled dishes. It's typically consumed raw, often as a primary ingredient in salads like Caesar salad, or as a crunchy addition to sandwiches and tacos. A common serving size is around 85-100g, which provides a good volume of food with minimal calories.

To maintain freshness, store unwashed romaine lettuce in a plastic bag in the crisper drawer of your refrigerator; wash just before use to prevent spoilage.
Pair romaine with a healthy fat like olive oil or avocado to enhance the absorption of fat-soluble vitamins, even if romaine itself isn't a primary source.
Use whole romaine leaves as a low-carb alternative to bread or tortillas for wraps, tacos, or burgers, adding a satisfying crunch.
Grill romaine halves briefly for a smoky flavor and slightly wilted texture, which can be a unique side dish or salad base.
Combine romaine with other colorful vegetables to create a nutrient-diverse salad, ensuring a broader spectrum of vitamins and minerals.
Things to keep in mind

Romaine lettuce is generally considered safe for consumption by most individuals and is not commonly associated with allergies. There are no widely documented significant gastrointestinal issues or drug interactions at normal serving sizes. However, like all fresh produce, proper washing is crucial to minimize the risk of foodborne illness. Individuals with compromised immune systems should be particularly diligent about washing leafy greens. There are no specific populations for whom romaine lettuce is contraindicated in typical dietary amounts.

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Reader questions
Is romaine lettuce healthy?
Yes, romaine lettuce is considered a healthy food. It scores 62/100 on FoodScore, indicating a good nutritional profile. It's a minimally processed vegetable with 0 calories, 0g of added sugar, and 0g of saturated fat per 100g, making it a low-energy-density option for your diet.
Is romaine lettuce good for weight loss?
Romaine lettuce is excellent for weight loss. With 0 calories per 100g, it allows you to consume a large volume of food without adding significant calories. Its high water content can help you feel full, supporting a calorie-controlled diet and aiding in satiety.
Is romaine lettuce ultra-processed?
No, romaine lettuce is not ultra-processed. It is classified as NOVA 1, meaning it is an unprocessed or minimally processed food. This indicates it's in its natural state or has undergone minimal changes like washing or trimming, without the addition of industrial ingredients.
How should I wash romaine lettuce?
To wash romaine lettuce, separate the leaves and rinse them thoroughly under cool running water. You can also soak them in a bowl of cold water for a few minutes to dislodge any dirt. Gently pat the leaves dry with a clean cloth or use a salad spinner to remove excess water before use, which helps dressings adhere better.
What are some good alternatives to romaine lettuce?
Good alternatives to romaine lettuce include other leafy greens like green leaf lettuce, butter lettuce, or even spinach. For a similar crunch and slightly more bitter flavor, you could use endive or radicchio. Each offers a slightly different nutrient profile and texture, allowing for variety in your meals.
Does romaine lettuce provide any protein?
Romaine lettuce provides a small amount of protein, with 0.98g per 100g serving. While not a significant source of protein on its own, it contributes to your overall daily intake, especially when combined with other protein-rich foods in a meal. For substantial protein, pair it with lean meats, beans, or nuts.
Can romaine lettuce be cooked?
Yes, romaine lettuce can be cooked, though it's most commonly eaten raw. Grilling or lightly sautéing romaine can soften its texture and bring out a slightly sweeter, smoky flavor. It holds up well to heat due to its sturdy leaves, making it a versatile ingredient for adding a vegetable component to warm dishes.

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Data & references

Sources: USDA FoodData Central (Foundation, fdcId 2346389)Updated 2026-04-20