Cratox AI
Reviewed by Cratox Nutrition Team · Updated November 13, 2025

Cratox team note

Romaine lettuce contains 1.2g of protein and 1.8g of fiber per 100g, making it a low-calorie option at just 17 kcal. It is ideal for salads or as a crunchy topping on sandwiches to enhance texture and nutrient intake.

Detailed close-up of fresh green romaine lettuce leaves, showcasing texture and vibrant color.

Lettuce, cos or romaine, raw

🔥 17 Calories
💪 1.2g Protein
3.2g Carbohydrates
🥑 0.3g Fat

At a glance

A fast summary built from the current nutrition profile per 100g.

Category
Vegetables
Lettuce, cos or romaine, raw
Energy density
Light
17 kcal per 100g
Macro energy profile
Carb-led
24% Protein · 63% Carbohydrates · 13% Fat
Glycemic profile
Low GI
GI 15
Notable signals
Very high in vitamin AVery high in vitamin KLow in fatLow in sugarLow in sodium

Nutritional Information

17
kcal/100g
Protein
1.2g
Carbohydrates
3.2g
Fat
0.3g
Glycemic Index:
15

About Lettuce, cos or romaine, raw

Lettuce, specifically cos or romaine, is a leafy green vegetable that belongs to the Asteraceae family. Originally cultivated in the Mediterranean region, romaine lettuce has become a staple in various cuisines around the world, known for its crisp texture and slightly nutty flavor. It is often used in salads, sandwiches, and as a garnish, providing a refreshing crunch and vibrant color to dishes.

This nutritious leafy green is low in calories, with only 17 calories per 100 grams, making it an excellent choice for weight management. Romaine lettuce is rich in vitamins A and C, as well as folate, which contributes to overall health. Its high water content and dietary fiber support hydration and digestive health, while the presence of antioxidants helps combat oxidative stress. Consuming romaine lettuce regularly can enhance your diet's nutritional profile and promote overall wellness.

Health Benefits

Supports hydration due to its high water content.
Aids in digestion thanks to its fiber content.
Rich in antioxidants that help combat free radicals.
Contributes to heart health with potassium and low saturated fat.
Boosts immune function with vitamin C.
Promotes healthy skin due to vitamin A.
May help in weight management due to low calorie density.
Supports bone health due to vitamin K content.
Contains folate which is essential during pregnancy.
May reduce the risk of chronic diseases with regular consumption.

Recommended Food Pairings

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1. Grilled chicken: The protein complements lettuce's crunch and provides a complete meal.
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2. Avocado: Adds healthy fats that enhance nutrient absorption from the lettuce.
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3. Quinoa: A nutritious grain that offers protein and fiber, creating a balanced dish.
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4. Cherry tomatoes: Their sweetness balances the lettuce's mild flavor, adding vitamins.
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5. Feta cheese: Provides a salty contrast to the fresh taste of romaine, enriching salads.

How to Consume

Serving size
150g, approximately 1 medium cup of shredded lettuce
Frequency
3-5 times per week
  • Use fresh romaine in salads for a crunchy texture.
  • Incorporate into sandwiches for added nutrients.
  • Blend into smoothies for a nutrient boost without overpowering flavors.
  • Wrap fillings in lettuce leaves for a low-carb alternative.
  • Sauté lightly as a bed for protein dishes.

Selection & Storage

How to choose:

  • Look for firm, crisp leaves without brown spots or wilting.
  • Choose vibrant green leaves for maximum nutrient content.
  • Check that the stem end is not slimy, indicating freshness.
  • Avoid heads that feel loose or have a puffed appearance.
Storage
Store in the refrigerator at 1-4°C (34-39°F) with high humidity.
Shelf life
5-7 days refrigerated, 3 months frozen

Warnings & Contraindications

  • ⚠️Individuals with certain allergies to Asteraceae family plants should avoid.
  • ⚠️Those on blood thinners should consult a doctor due to vitamin K content.
  • ⚠️Excessive consumption may lead to digestive discomfort.
  • ⚠️Ensure thorough washing to avoid pesticide residue.

Frequently Asked Questions

How many calories does Lettuce, cos or romaine, raw have?

Lettuce, cos or romaine, raw contains approximately 17 calories per 100 grams. This low-calorie count makes it an ideal vegetable for weight management and adding bulk to meals without significant caloric intake.

Is Lettuce, cos or romaine, raw healthy?

Yes, lettuce, cos or romaine, raw is considered very healthy due to its low calorie content, high water content, and rich supply of essential vitamins and minerals. It provides dietary fiber, which aids digestion, and is a good source of vitamin C, potassium, and antioxidants.

How should Lettuce, cos or romaine, raw be stored?

To store romaine lettuce, place it in the refrigerator in a plastic bag or container to maintain humidity. It's best to keep it unwashed until you're ready to use it, as moisture can lead to spoilage. Properly stored, it can last for 5-7 days.

What are the benefits of eating Lettuce, cos or romaine, raw?

Eating romaine lettuce provides numerous benefits, including hydration due to its high water content, digestive support from fiber, and a wealth of vitamins like A and C that contribute to skin health and immune function. Its low calorie count also supports weight management.

How much Lettuce, cos or romaine, raw can I eat per day?

It is generally safe to consume romaine lettuce in moderate amounts, around 1-2 cups per day, as part of a balanced diet. This quantity allows you to benefit from its nutrients without overdoing high-fiber intake.

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