Lettuce

Nutrition per ~85 g · ¾ cup chopped

1.3 g net carbs after fiber.

Vitamins

Minerals & other

Bioactives estimated

Representative amounts for this food, not measured for this item. Real content varies widely by variety, ripeness and storage.

What drives the score weighted inputs

These are the scored components, not a sum: the published score also reflects normalisation across the catalog, so the parts above will not add to 94.

Less a 1.0 anti-nutrient penalty (moderate sodium).

What it feeds primary sources only

Systems

Pathways

Overview

Lettuce (Lactuca sativa) originated in the Mediterranean region and has been cultivated for over 2,500 years. While often dismissed as nutritionally modest due to high water content (95%), lettuce provides concentrated micronutrients and bioactive compounds per calorie, making it a longevity staple. Different varieties—romaine, butterhead, and red leaf lettuce—vary in phytonutrient density, with darker varieties containing significantly more carotenoids and polyphenols. Lettuce's primary longevity relevance centers on cardiovascular health through its vitamin K content (essential for arterial calcification prevention) and antioxidant compounds that combat oxidative stress and inflammation. The high water and fiber content supports satiety and digestive health without caloric burden. Regular lettuce consumption has been associated with improved endothelial function and reduced cardiovascular disease risk in large prospective studies. Its low glycemic impact makes it particularly valuable for glucose metabolism and diabetes prevention, while its nutrient density supports cognitive function through lutein and zeaxanthin accumulation in the retina and brain.

Health benefits 5

Pairs with

• Pair with olive oil because fat-soluble vitamins (K, A, E) require dietary lipids for absorption; olive oil's polyphenols synergize with lettuce's antioxidants
• Pair with tomatoes because lycopene absorption increases with olive oil and vitamin C from tomatoes enhances iron bioavailability from lettuce
• Pair with cruciferous vegetables (broccoli, cabbage) because combined glucosinolates and polyphenols create additive anti-inflammatory effects
• Pair with beans or legumes because plant proteins and fiber work synergistically to enhance satiety and provide complementary amino acid profiles

In the kitchen

• Choose darker varieties (romaine, red leaf, kale-like lettuce) over iceberg, which contain 5-10x higher polyphenol and carotenoid concentrations
• Store in crisper drawer wrapped in damp paper towel to maintain hydration; use within 5-7 days as nutrient density declines with age
• Tear rather than chop lettuce by hand within 15 minutes of consumption to minimize enzymatic oxidation of polyphenols
• Consume raw or lightly wilted (not cooked) to preserve heat-sensitive vitamins K and C and maximize polyphenol bioavailability

When to eat it anytime

Lettuce's low glycemic load and nutrient profile support any meal timing. As a volume-filling, calorie-sparse food, it's particularly useful at lunch or dinner to reduce overall meal energy density without satiety compromise.

Fasting-compatible

Lettuce contains negligible calories and macronutrients; consuming during fasting periods does not meaningfully break metabolic fasting state.