Nutrilyt
All foods
Romaine Lettuce

Leafy Green Vegetable

Romaine Lettuce

A crisp, dark-leafed lettuce variety known for its robust texture and high nutrient density per calorie.

Crisp, dark green leafy vegetable with a robust crunch, commonly used as a salad base, especially in Caesar salads.

high-volume low-calorie leafy green

Typical serving · 85g

Common varieties · green romaine, red romaine, baby romaine, romaine hearts

85health

Overall context score across nutrition, safety, and diet fit

At a glance

Quick facts

Simple indicators based on nutrition, processing, and diet fit.

Low calorieLow carbLow glycemicWeight lossDiabetes-friendlyGut health

The story

What makes it unique

Romaine lettuce is a high-water, low-calorie leafy green characterized by rapid digestion and a high volume-to-calorie ratio. Its macronutrient profile is minimal, but it provides concentrated micronutrients like vitamin K and folate. As a minimally processed raw food, it retains full cellular structure and fiber content, promoting gastric distension and satiety.

Varieties: green romaine · red romaine · baby romaine · romaine hearts

#romainelettuce#leafygreens#lowcalorie#weightlossfood#saladbase#vitamink#lowcarbvegetable#highvolumefood

Per 100g

Nutrition breakdown

Macro balance and key metrics at a glance.

Energy

17kcal

Density 0.17 kcal/g

Protein

1.2g

Carbs

3.3g

Fat

0.3g

Fiber

2.1g

Sugar

1.2 g

Sodium

8 mg

Potassium

247 mg

Glycemic index

15

Glycemic load

1

Water content

95%

Standout compounds

Nutrient highlights

  • Vitamin K

    high

    Essential for blood clotting and bone metabolism

  • Vitamin A

    high

    Supports vision, immune function, and skin health

  • Folate

    moderate

    Important for cell division and DNA synthesis

  • Fiber

    moderate

    Promotes digestive regularity and gut health

  • Potassium

    moderate

    Helps regulate blood pressure and fluid balance

Wellness map

Health scores & processing

Weight loss
95
Satiety
80
Blood sugar
95
Gut health
75
Heart health
80
Fitness
30
Processing
100

NOVA processing scale

1
Min
2
3
4
Ultra

unprocessed · Whole food

Raw, intact vegetable requiring no processing for consumption.

Diet compatibility

  • Weight loss
  • Muscle gain
  • Diabetes
  • Gut health
  • Low carb
  • High protein
  • Heart health

Relative standing

Food rankings

Qualitative ranks compared to similar whole foods.

  • Satietygood
  • Blood sugarexcellent
  • Nutrient densitygood
  • Fitness fuelpoor
  • Processing qualityexcellent

Eat with confidence

Food safety profile

Romaine has a history of bacterial contamination outbreaks, primarily E. coli, linked to agricultural water. Thorough washing is essential but may not eliminate all pathogens if internalized.

70safety

Evidence confidence 90%

  • Pesticidesmoderate
  • Antibioticslow
  • Heavy metalslow
  • Contaminationmoderate

Watch for

  • E. coli
  • Salmonella
  • Listeria
  • pesticide residues

Safer choices

Hydroponically grown romaine or whole heads with outer leaves removed.

Prep tips

Separate leaves and wash thoroughly under running water. Avoid cross-contamination in the kitchen. Store in a clean refrigerator.

Frequent subject of FDA recalls due to irrigation water contamination.

Deep dive

Health analysis

How this food may fit different goals and preparation choices.

  1. Weight loss

    Extremely low energy density allows large portion sizes that physically fill the stomach for minimal calories.

  2. Blood sugar

    Negligible impact on blood glucose due to low carbohydrate and sugar content, paired with a high water volume.

  3. Fitness & energy

    Provides no meaningful fuel for exercise but serves as an excellent vehicle for post-workout protein and carb sources in meals.

  4. Gut health

    Insoluble fiber adds bulk to stool and supports regular bowel movements, though total fiber per serving is modest.

  5. Processing quality

    Whole, raw food with intact cellular structure and zero additives.

  6. Food safety

    Historical E. coli outbreaks require careful sourcing and washing; pre-chopped bagged romaine carries higher risk.

  7. Common mistakes

    Drowning romaine in high-calorie dressings, which completely negates its low-calorie advantage for weight loss.

  8. Best preparation

    Washed raw as a salad base, used as a low-carb wrap substitute, or lightly grilled for a smoky flavor.

Practical guide

Best use cases

When and how this food fits real eating patterns.

  • Low-calorie salad base

    Provides high volume and crunch to meals without adding significant calories.

  • Low-carb sandwich wrap

    Large romaine leaves serve as a gluten-free, low-carb alternative to tortillas or bread.

  • High-volume eating

    Allows dieters to eat large physical portions to feel full while maintaining a caloric deficit.

Balance sheet

Pros & cons

Upsides

  • Very low in calories and carbohydrates
  • High water content promotes physical satiety
  • Excellent source of vitamins K and A
  • Versatile as a raw salad base or low-carb wrap
  • Minimal processing with no additives

Trade-offs

  • Very low in protein and dietary fat
  • Provides negligible energy for athletic performance
  • Historical risk of bacterial contamination
  • Requires thorough washing before consumption
  • Perishes quickly compared to heartier greens

Fit check

Who is it for?

Great match

  • weight loss diets
  • low-carb and keto meal planning
  • high-volume eating strategies
  • blood sugar management

Consider alternatives

  • post-workout recovery fuel
  • muscle building diets
  • survival or high-calorie needs

Side by side

How it compares

Open the full head-to-head analysis for nutrition, safety, and practical tradeoffs.

  • Romaine Lettuce

    This food

    Romaine Lettuce

    VS90% alike
    Iceberg Lettuce

    Compare with

    Iceberg Lettuce

    Romaine is far richer in vitamins; iceberg is mostly water with fewer nutrients.

    Romaine provides significantly more vitamins A and K than iceberg, making it the healthier choice for salads.

    Romaine Lettuce vs Iceberg Lettuce
  • Romaine Lettuce

    This food

    Romaine Lettuce

    VS75% alike
    Spinach

    Compare with

    Spinach

    Spinach is higher in iron and magnesium; romaine offers more crunch and volume per bite.

    Spinach packs more iron and minerals, while romaine provides superior crunch and physical fullness for low-calorie eating.

    Romaine Lettuce vs Spinach
  • Romaine Lettuce

    This food

    Romaine Lettuce

    VS70% alike
    Kale

    Compare with

    Kale

    Kale is denser in nutrients and fiber; romaine is easier to digest and eat in large quantities.

    Kale offers more fiber and vitamin C per calorie, but romaine is much easier to eat in large volumes for weight loss.

    Romaine Lettuce vs Kale
  • Romaine Lettuce

    This food

    Romaine Lettuce

    VS70% alike
    Arugula

    Compare with

    Arugula

    Arugula has a peppery flavor and more calcium; romaine is milder and crisper for salad bases.

    Arugula provides a peppery kick and more calcium, while romaine delivers better bulk and crunch for meal prep.

    Romaine Lettuce vs Arugula
  • Romaine Lettuce

    This food

    Romaine Lettuce

    VS85% alike
    Butter Lettuce

    Compare with

    Butter Lettuce

    Butter lettuce is softer and sweeter; romaine is crunchier and higher in vitamin K.

    Romaine is crunchier and better for hearty salads, while butter lettuce is more tender and sweeter for delicate wraps.

    Romaine Lettuce vs Butter Lettuce
  • Romaine Lettuce

    This food

    Romaine Lettuce

    VS65% alike
    Cabbage

    Compare with

    Cabbage

    Cabbage is tougher and slightly higher in carbs; romaine is more tender for raw salads.

    Cabbage is slightly higher in fiber and vitamin C, while romaine is more tender and better suited for traditional salads.

    Romaine Lettuce vs Cabbage
  • Romaine Lettuce

    This food

    Romaine Lettuce

    VS60% alike
    Celery

    Compare with

    Celery

    Both are low-calorie crunch foods; celery has more sodium, romaine has more vitamin A.

    Celery offers a quick crunchy snack with slightly more sodium, while romaine provides more vitamin A and bulk for meals.

    Romaine Lettuce vs Celery
  • Romaine Lettuce

    This food

    Romaine Lettuce

    VS60% alike
    Cucumber

    Compare with

    Cucumber

    Both are highly hydrating; cucumber has slightly fewer calories, romaine has more vitamins.

    Cucumbers are slightly lower in calories, but romaine lettuce provides significantly more vitamin K and folate.

    Romaine Lettuce vs Cucumber
  • Romaine Lettuce

    This food

    Romaine Lettuce

    VS65% alike
    Swiss Chard

    Compare with

    Swiss Chard

    Swiss chard is richer in magnesium and iron; romaine has a milder flavor and better crunch.

    Swiss chard provides more magnesium and iron for muscle function, while romaine offers a milder flavor and more volume for dieting.

    Romaine Lettuce vs Swiss Chard
  • Romaine Lettuce

    This food

    Romaine Lettuce

    VS95% alike
    Green Leaf Lettuce

    Compare with

    Green Leaf Lettuce

    Very similar nutritionally; romaine is crunchier and holds up better in hearty salads.

    Romaine and green leaf lettuce are nutritionally similar, but romaine has a sturdier crunch that holds up better under heavy dressings.

    Romaine Lettuce vs Green Leaf Lettuce

Common questions

FAQ

Answers aligned with how people search for this food.

  • Is romaine lettuce good for weight loss?

    Yes, its high water and fiber content create physical fullness for very few calories, making it ideal for volume eating.

  • Is romaine healthier than iceberg?

    Yes, romaine has significantly more vitamins A, K, and folate than iceberg lettuce, making it the nutritionally superior choice.

  • Can diabetics eat romaine lettuce?

    Yes, it has a negligible impact on blood sugar and is safe and beneficial for diabetic diets due to its low carbohydrate content.

  • Why does romaine lettuce keep getting recalled?

    Recalls are typically due to E. coli contamination from agricultural runoff or irrigation water issues, particularly in certain growing regions.

  • Does romaine lettuce have any nutritional value?

    Yes, it is an excellent source of vitamins K and A, and provides a good amount of folate, fiber, and potassium per calorie.

  • Is it safe to eat romaine lettuce everyday?

    Yes, if properly washed and sourced from reputable suppliers, daily consumption is safe and beneficial for most people.

  • How do you clean romaine lettuce properly?

    Separate the leaves, rinse thoroughly under running water while gently rubbing the surface, and dry with a salad spinner or clean towel.

  • Can you cook romaine lettuce?

    Yes, grilling or sautéing romaine halves is popular and brings out a sweet, smoky flavor while maintaining some crunch.

Transparency

Data confidence

Estimated confidence for nutrition data, interpretation, safety notes, and comparisons.

95

Nutrition data

90

Health analysis

90

Food safety

95

Comparisons