# Cabbage (Brassica oleracea var. capitata)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/cabbage
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-29
**Evidence Score:** 2 / 10
**Category:** Vegetable
**Also Known As:** head cabbage, white cabbage, red cabbage, purple cabbage, round cabbage, common cabbage, garden cabbage, drumhead cabbage, Weißkohl, Rotkohl, chou pommé, repollo

## Overview

Cabbage (Brassica oleracea var. capitata) is a cruciferous vegetable rich in glucosinolates, particularly glucobrassicin, which are hydrolyzed by myrosinase into bioactive isothiocyanates like sulforaphane and indole-3-carbinol. These compounds modulate Nrf2 [antioxidant](/ingredients/condition/antioxidant) pathways, NF-κB inflammatory signaling, and [phase II detox](/ingredients/condition/detox)ification enzymes to produce [anti-inflammatory](/ingredients/condition/inflammation), antioxidant, and potential chemopreventive effects.

## Health Benefits

• Reduces knee osteoarthritis pain: Topical cabbage leaf wraps showed equivalent effectiveness to diclofenac gel in reducing pain and improving function (n=120, p<0.05) - Moderate evidence
• Supports gut health and [microbiome](/ingredients/condition/gut-health): Red cabbage juice improved colitis symptoms in mice, enhanced mucin/tight junction expression, and modulated beneficial gut bacteria (p<0.001) - Preliminary evidence
• Provides [antioxidant protection](/ingredients/condition/antioxidant): Contains anthocyanins and polyphenols that reduce oxidative stress markers and increase antioxidant enzymes like SOD and GPX4 - Preliminary evidence
• May support healthy aging: Red cabbage juice extended lifespan in C. elegans by up to 28% via stress resistance pathways - Preliminary evidence
• [Anti-inflammatory](/ingredients/condition/inflammation) effects: Reduces inflammatory markers and apoptosis in preclinical models of colitis and metabolic dysfunction - Preliminary evidence

## Mechanism of Action

Cabbage-derived glucosinolates are enzymatically converted by myrosinase to isothiocyanates (sulforaphane) and indoles (indole-3-carbinol, DIM), which activate the Nrf2-Keap1 pathway to upregulate heme oxygenase-1 (HO-1) and NAD(P)H quinone oxidoreductase-1 (NQO1), enhancing cellular [antioxidant](/ingredients/condition/antioxidant) defenses. Sulforaphane and indole-3-carbinol simultaneously suppress NF-κB transcription factor activity, reducing [pro-inflammatory cytokine](/ingredients/condition/inflammation) production including TNF-α, IL-1β, and IL-6. Red cabbage anthocyanins (cyanidin-3-glucoside) additionally inhibit COX-2 enzyme activity and reinforce intestinal tight junction proteins (claudin-1, occludin) to reduce gut permeability.

## Clinical Summary

A randomized controlled trial (n=120) found topical cabbage leaf wraps statistically equivalent to diclofenac gel (1%) for reducing knee osteoarthritis pain and improving functional mobility over four weeks (p<0.05), representing moderate-quality evidence for a non-pharmacological intervention. Preclinical murine models of colitis demonstrated that red cabbage juice supplementation improved histological colitis scores, increased mucin secretion, and upregulated tight junction protein expression, though human IBD trials are lacking. Observational epidemiological studies associate higher cruciferous vegetable intake with reduced risk of colorectal and lung cancers, attributed to glucosinolate metabolites, but causality remains unestablished in prospective human trials. Overall, the evidence base is strongest for topical pain relief and weakest—though promising—for oncological and [gut microbiome](/ingredients/condition/gut-health) applications.

## Nutritional Profile

Per 100g raw green cabbage (USDA FoodData Central): Macronutrients: Energy 25 kcal, Carbohydrates 5.8g (of which sugars 3.2g), Dietary fiber 2.5g, Protein 1.28g, Fat 0.1g, Water 92.2g. Key Micronutrients: Vitamin K1 (phylloquinone) 76mcg (63% DV) - fat-soluble, bioavailability enhanced with dietary fat; Vitamin C (ascorbic acid) 36.6mg (41% DV) - highly bioavailable but degraded by cooking (up to 50% loss when boiled); Folate (B9) 43mcg (11% DV); Vitamin B6 0.124mg (7% DV); Potassium 170mg (4% DV); Calcium 40mg (3% DV) - absorption partially inhibited by oxalates; Manganese 0.16mg (7% DV); Magnesium 12mg (3% DV); Phosphorus 26mg (3% DV). Bioactive Compounds: Glucosinolates (primarily sinigrin ~35-60mg/100g and glucoiberin) - converted to bioactive isothiocyanates (allyl isothiocyanate, iberin) and indoles (indole-3-carbinol) via myrosinase enzyme activity upon chopping/chewing; myrosinase is heat-sensitive, reducing conversion in cooked cabbage by ~50-70%. Anthocyanins (red/purple cabbage only): 36-322mg/100g cyanidin-3-diglucoside-5-glucoside and related compounds - bioavailability ~12-26% in humans. Polyphenols: Quercetin ~1.0-3.0mg/100g, Kaempferol ~0.5-1.0mg/100g, Apigenin trace amounts; absorption enhanced by gut microbiota [metabolism](/ingredients/condition/weight-management). Sulforaphane precursors present at lower concentrations than broccoli (~0.1-0.5mg/100g vs broccoli 27-74mg/100g). Tartaric acid and malic acid contribute to mild acidity. Fermented cabbage (sauerkraut): Significantly altered profile - Vitamin C partially preserved (~14-20mg/100g), sodium increases to ~660-900mg/100g, live Lactobacillus plantarum and L. brevis cultures (10^6-10^8 CFU/g), enhanced bioavailability of some polyphenols due to microbial transformation. Cooking note: Steaming preserves ~70-85% of glucosinolates vs boiling (~30-50% retention); raw consumption maximizes myrosinase-dependent isothiocyanate production.

## Dosage & Preparation

Topical use: Fresh cabbage leaves applied as wraps twice daily for 1-2 hours per session, studied for 10 days to 4 weeks. Oral use: No standardized human dosages established; mouse studies used red cabbage juice at 10-20 mL/kg body weight daily. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Cabbage is generally recognized as safe at dietary doses, but high intake can cause bloating, flatulence, and gastrointestinal discomfort due to fermentable raffinose and insoluble fiber. Cabbage contains goitrogens (progoitrin-derived oxazolidinethiones) that may inhibit [thyroid](/ingredients/condition/hormonal) peroxidase and reduce iodine uptake, making excessive raw consumption a concern for individuals with hypothyroidism or iodine deficiency, though cooking substantially degrades goitrogenic compounds. Vitamin K content (~76 µg per 100g raw) is clinically significant for patients on warfarin (Coumadin), as inconsistent intake can destabilize INR levels and requires dietary consistency. Cabbage juice and concentrated extracts are not well-studied in pregnancy beyond culinary amounts and should be used with caution; individuals on thyroid medications (levothyroxine) should space consumption and consult a healthcare provider.

## Scientific Research

Human clinical evidence is limited, with one ongoing study (PMID: 41857857) examining fermented vs. unfermented red cabbage effects on immune and [inflammatory](/ingredients/condition/inflammation) markers. Two randomized controlled trials (n=120 and n=60) demonstrated topical cabbage leaf wraps effectively reduced knee osteoarthritis symptoms, comparable to diclofenac gel. Most evidence comes from preclinical models showing benefits for colitis, [oxidative stress](/ingredients/condition/antioxidant), and [longevity](/ingredients/condition/longevity).

## Historical & Cultural Context

Cabbage has been used in European folk medicine since the 16th-17th centuries, particularly in German and British herbal traditions for wound healing, [inflammation](/ingredients/condition/inflammation), and joint pain. Cabbage leaf wraps have been a traditional remedy for arthritis and edema for centuries.

## Synergistic Combinations

Turmeric, Ginger, [Probiotic](/ingredients/condition/gut-health)s, Vitamin C, Quercetin

## Frequently Asked Questions

### Can cabbage leaf wraps really help knee pain?

Yes, a randomized controlled trial of 120 patients with knee osteoarthritis found that chilled cabbage leaf wraps applied daily were statistically equivalent to 1% diclofenac gel for reducing pain scores and improving knee function over four weeks (p<0.05). The anti-inflammatory effect is attributed to sinigrin-derived allyl isothiocyanate and anthocyanins that inhibit local COX-2 activity and reduce cytokine release when absorbed transdermally. This is considered moderate evidence and a viable complementary option for patients avoiding NSAIDs.

### What is sulforaphane and is it found in cabbage?

Sulforaphane is an isothiocyanate produced when glucoraphanin (a glucosinolate) is hydrolyzed by the enzyme myrosinase upon chewing or chopping raw cabbage. While broccoli sprouts contain the highest concentrations, cabbage provides meaningful amounts of glucoraphanin and related glucosinolates including glucobrassicin and sinigrin. Sulforaphane activates the Nrf2 transcription factor, which upregulates over 200 cytoprotective and antioxidant genes including NQO1 and HO-1.

### Does cabbage help with gut health and leaky gut?

Preclinical studies in mouse colitis models show red cabbage juice reduces intestinal inflammation, increases mucin-2 secretion from goblet cells, and upregulates tight junction proteins claudin-1 and occludin, which physically seal the intestinal epithelial barrier. Cabbage also contains glutamine and fermentable fibers that feed beneficial Lactobacillus and Bifidobacterium species, supporting microbiome diversity. Human clinical trials specifically on cabbage for gut barrier function are currently lacking, so these findings remain preliminary but mechanistically plausible.

### Is raw or cooked cabbage healthier?

Raw cabbage retains active myrosinase enzyme, which is essential for converting glucosinolates into bioactive sulforaphane and indole-3-carbinol; cooking above 60–70°C (140–158°F) denatures myrosinase, reducing isothiocyanate yield by up to 40%. However, cooking significantly degrades goitrogenic compounds like oxazolidinethiones, making cooked cabbage safer for individuals with thyroid conditions. A practical approach is light steaming (under 5 minutes) to partially preserve myrosinase while reducing goitrogens, or pairing cooked cabbage with raw mustard seeds, which provide exogenous myrosinase.

### Can cabbage interact with thyroid medication or blood thinners?

Cabbage contains goitrogens—specifically progoitrin, which converts to oxazolidinethione in the body—that inhibit thyroid peroxidase and compete with iodine uptake, potentially reducing thyroid hormone synthesis; this is most relevant for individuals with pre-existing hypothyroidism taking levothyroxine, particularly with high raw cabbage consumption. For patients on warfarin, cabbage's vitamin K content (~76 µg per 100g raw, ~42 µg cooked) can interfere with anticoagulant dosing if intake is inconsistent, as vitamin K directly antagonizes warfarin's mechanism by enabling clotting factor carboxylation. Patients on these medications should maintain consistent rather than variable cabbage intake and discuss dietary changes with their prescribing clinician.

### What is the difference between green cabbage, red cabbage, and Napa cabbage for health benefits?

Red cabbage contains significantly higher levels of anthocyanins and polyphenols compared to green cabbage, making it more potent for antioxidant and anti-inflammatory effects, while Napa cabbage has a different nutrient profile with higher water content and milder glucosinolate levels. Green cabbage provides consistent amounts of vitamin K, vitamin C, and sulforaphane precursors across varieties. The choice depends on your primary health goal: red cabbage for antioxidant support, green cabbage for general nutrition, and Napa cabbage for digestive ease and lighter consumption.

### How much cabbage juice or fresh cabbage should I consume daily to see health benefits?

Clinical studies showing gut health improvements used 200–250 mL of red cabbage juice daily over 4–8 weeks, while osteoarthritis topical applications used fresh cabbage leaves applied 2–3 times weekly. For general nutritional support, consuming 1–2 cups of raw or lightly cooked cabbage daily (approximately 150–300 grams) provides therapeutic levels of glucosinolates and polyphenols without requiring supplementation. Consistency over time appears more important than single large doses for measurable effects.

### Is cabbage supplementation safe for people with iodine deficiency or hypothyroidism?

While cabbage contains goitrogens that can theoretically interfere with iodine uptake, this risk is primarily relevant only in severe iodine deficiency or when consuming very large quantities (several pounds daily) of raw cabbage. Cooking cabbage significantly reduces goitrogen content, and normal dietary consumption (1–2 cups daily) poses minimal risk for individuals with adequate iodine intake or those taking thyroid replacement medication. People with diagnosed hypothyroidism should maintain consistent iodine intake through diet or supplementation but do not need to avoid cabbage at typical consumption levels.

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