Cabbage

Cabbage (Brassica oleracea var. capitata) is a leafy green or purple cruciferous vegetable belonging to the same family as broccoli and kale. It originates from coastal regions of northern Europe and is now cultivated globally. Cabbage is consumed raw in slaws and salads, cooked in stir-fries and soups, or fermented as sauerkraut or kimchi. It is inexpensive, shelf-stable, and a dietary staple across many cuisines.

Raw cabbage provides approximately 25 calories, 1.3 g protein, 5.8 g carbohydrate, and 2.5 g fiber per 100 g serving. It is high in vitamin C (approximately 41% of the daily value per 100 g), vitamin K, and folate. Cabbage contains glucosinolates—sulfur compounds that break down into bioactive isothiocyanates when the plant tissue is disrupted by chewing or cutting, primarily via the enzyme myrosinase, and also through colonic microbial enzymes. Cooked cabbage is generally well tolerated; raw cabbage in large quantities may cause bloating or gas due to fermentable carbohydrates, particularly in individuals with irritable bowel syndrome.

Digestive Tolerance and Fermentation

Cabbage contains fermentable carbohydrates (FODMAPs), making large raw servings potentially problematic for FODMAP-sensitive individuals. Monash University guidance suggests keeping cooked green cabbage servings to approximately 75 g or less to remain within low-FODMAP thresholds; larger portions may trigger symptoms in sensitive individuals. Fermented cabbage products (sauerkraut, kimchi) undergo bacterial fermentation that reduces FODMAP content and introduces live cultures, though the probiotic benefit depends on processing and storage conditions. Cooking cabbage generally reduces gas-producing compounds and improves digestibility in most people.

Nutrient Bioavailability and Individual Variation

Cabbage is a reliable source of vitamin C and dietary fiber but contains no unique micronutrients unavailable from other vegetables. Vitamin K content is high enough to warrant consideration in individuals taking warfarin or other vitamin K-antagonist anticoagulants; consistent intake rather than sudden large increases is the relevant clinical factor. Cabbage is not a common allergen, though oral allergy syndrome has been rarely reported in individuals with birch pollen allergy. Most people tolerate cabbage without restriction; those with IBS or small intestinal bacterial overgrowth (SIBO) may need to limit raw or undercooked portions to avoid symptom exacerbation.