Radishes are low-calorie cruciferous vegetables rich in vitamin C, potassium, and bioactive sulfur compounds that support detoxification and cardiovascular health.
LiverHeartBlood PressureAntioxidantGutBlood Sugar
Nutrition per ~85 g · ¾ cup chopped
Form
15kcal
Protein0.5 g
Carbs3.5 g
Fat0.1 g
Fiber1.4 g
2.1 g net carbs after fiber.
Vitamins
Vitamin C18.7 mg21%
Folate23.8 mcg6%
Pantothenic Acid0.12 mg2%
Vitamin B639.1 mcg2%
Thiamin17 mcg1%
Riboflavin17 mcg1%
Niacin0.17 mg1%
Vitamin K0.26 mcg0%
Minerals & other
Copper97.8 mcg11%
Potassium193 mg4%
Magnesium13.6 mg3%
Iron0.34 mg2%
Calcium22.9 mg2%
Phosphorus19.6 mg2%
Manganese32.3 mcg1%
Zinc0.13 mg1%
Choline6.2 mg1%
Selenium0.59 mcg1%
Sodium17.8 mg1%
Saturated Fat0.025 g—
Monounsaturated Fat0.014 g—
Polyunsaturated Fat0.038 g—
Bioactives estimated
Glucosinolates~85 mg
Inulin / Prebiotic fibre~2.5 g
Nitrates~128 mg
Glutathione~13 mg
Polyphenols~128 mg
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
Nutrient density31.2/35Vitamins and minerals relative to calories — the single biggest driver.
Protein quality7.8/15How much protein it delivers, by absolute grams and per calorie.
Bioactives12.5/15Polyphenols, flavonoids and other beneficial plant compounds.
Fiber10.0/10Dietary fiber for gut health, satiety and steadier blood sugar.
Healthy fats5.0/10Fat quality — unsaturated against saturated, and trans-fat free.
Glycemic impact10.0/10Low sugar with a high fiber-to-carb ratio scores best.
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 91.
MethylationAntioxidantATP / MitoBoneThyroidCollagenNeurotransmitterDetoxGlucoseHematopoiesisLipidsGut MicrobiomeMembranesClottingHPA AxisGlycolysisβ-OxidationKetogenesisNAD⁺mTORAMPKUrea CycleDopamineSerotoninSteroidogenesisVitamin D ActivationInsulin Signaling
Overview
Radishes (Raphanus sativus) are root vegetables native to Southeast Asia, cultivated for millennia across Mediterranean and Asian cuisines. Despite their minimal caloric density (18 kcal/100g), radishes deliver notable micronutrient density, particularly vitamin C (22mg/100g) and potassium (227mg/100g), supporting immune function and electrolyte balance. Their distinctive peppery flavor derives from glucosinolates and isothiocyanates—sulfur-containing compounds also found in broccoli and cabbage—which activate Phase II detoxification enzymes in liver cells. Raw radishes retain maximal bioactive compound concentration; cooking significantly reduces glucosinolate content. The high water content (95%) and modest fiber load (1.6g/100g) promote satiety and digestive regularity without glycemic impact. Emerging research suggests radish consumption supports endothelial function through nitrate content, though less studied than leafy greens. Their rapid growth cycle and year-round availability make them accessible for consistent consumption. In longevity contexts, radishes represent a nutrient-dense, anti-inflammatory addition to plant-forward diets with minimal caloric cost.
Health benefits 5
Supports Phase II detoxification and reduces carcinogen exposure riskmoderate
Glucosinolates and isothiocyanates activate sulfotransferase and glutathione-S-transferase enzymes, enhancing xenobiotic metabolism and elimination of environmental toxins
Reduces systemic inflammation and supports vascular endothelial functionmoderate
Vitamin C acts as a cofactor for collagen synthesis and endothelial nitric oxide production; sulfur compounds provide anti-inflammatory signaling
Supports healthy blood pressure through potassium and nitrate contentmoderate
Potassium antagonizes sodium's hypertensive effects and supports vasodilation; dietary nitrates are converted to nitric oxide, promoting arterial compliance
Promotes healthy gut microbiota composition through prebiotic fiberemerging
Radish fiber, particularly insoluble fraction, selectively feeds beneficial Bacteroidetes species while limiting pathogenic gram-positive proliferation
Enhances antioxidant defense and reduces oxidative DNA damagemoderate
Vitamin C and polyphenols neutralize free radicals; glucosinolates upregulate endogenous antioxidant enzyme systems (SOD, catalase, GPx)
Pairs with
Pair with healthy fats (olive oil, avocado) to enhance fat-soluble vitamin absorption and increase glucosinolate bioavailability through improved gastric lipid signaling
Combine with fermented foods (sauerkraut, kimchi, miso) to synergize prebiotic fiber with probiotic strains, optimizing microbiota-mediated metabolite production
Eat with sulfur-rich alliums (garlic, onions) to amplify Phase II enzyme activation through complementary organosulfur compound profiles
Pair with vitamin C sources (citrus, bell peppers) to enhance non-heme iron absorption from radish leaves and support collagen cross-linking
Combine with cruciferous vegetables (broccoli, Brussels sprouts) for additive glucosinolate dose and diverse isothiocyanate profiles targeting different detoxification pathways
In the kitchen
Consume radishes raw or lightly steamed to preserve glucosinolates; prolonged cooking (>5 minutes) degrades bioactive compounds by 30-50%
Store unwashed radishes in high-humidity (95%+) environment at 0-4°C; they retain crispness for 3-4 weeks when separated from greens to prevent ethylene-mediated senescence
Include radish greens in salads or soups—they contain 3-4x higher glucosinolate concentration than roots and provide additional folate and calcium
Eat radishes in rotation rather than daily excess; their mustard oil content may cause digestive distress (bloating, sulfurous gas) in susceptible individuals due to rapid fermentation
Select firm, smooth radishes without soft spots or sprouting; smaller specimens (1-1.5 inches diameter) tend to be sweeter with less peppery bite, improving palatability for consistent consumption
When to eat it anytime
Radishes contain no compounds that interfere with sleep, spike blood glucose, or compete with medications. Their low calorie density and high water content make them suitable pre-meal appetizers for appetite regulation or post-meal digestive aids. Raw consumption maximizes bioactive compound exposure regardless of circadian timing.
Fasting-compatible
During intermittent fasting windows, radishes' negligible caloric and carbohydrate load (<5 kcal, <1g net carbs per 100g serving) do not meaningfully disrupt metabolic state; their peppery compounds may enhance digestive enzyme secretion upon eating window break.