Hermetica Superfood Encyclopedia
Celeriac (Apium graveolens var. rapaceum) is a root vegetable containing phthalides and apigenin that may help regulate blood pressure and glucose metabolism. These bioactive compounds appear to work through vasodilation and improved insulin sensitivity mechanisms.
Origin & History
Celeriac (Apium graveolens var. rapaceum) is the edible, enlarged root of the celery plant, native to the Mediterranean region. It is consumed as a whole root vegetable or processed into powders and extracts for supplements. Clinical studies primarily utilize capsule formulations derived from celery seeds or powder from fresh plant material.
Scientific Research
Clinical evidence is primarily based on celery seed extract, not celeriac root itself. A meta-analysis of 9 RCTs (n=511) confirmed that celery supplementation significantly reduces blood pressure, fasting glucose, and triglycerides. A key triple-blind RCT (PMID: 35536382) using 1.34 g/day of celery seed extract echoed these benefits, while another RCT using 750 mg/day of fresh celery powder found no cardiometabolic improvements (PMID: 37701242), indicating that preparation and dosage are critical.
Preparation & Dosage
Clinically studied doses for celery seed extract capsules are 1.34 g/day for 4 weeks. A meta-analysis reviewed dosages ranging from 10.55 mg to 2250 mg per day for 12 to 84 days. A dose of 750 mg/day of powder from fresh celery was found to be ineffective in one 12-week study. Consult a healthcare provider before starting any new supplement.
Nutritional Profile
Celeriac (raw, per 100g): Energy ~42 kcal, Carbohydrates ~9.2g (of which sugars ~1.6g), Dietary fiber ~1.8g, Protein ~1.5g, Fat ~0.3g. Key micronutrients: Vitamin K1 ~41µg (34% DV), Vitamin C ~8mg (9% DV), Vitamin B6 ~0.17mg (10% DV), Phosphorus ~115mg (9% DV), Potassium ~300mg (6% DV), Magnesium ~20mg (5% DV), Calcium ~43mg (3% DV), Iron ~0.7mg (4% DV), Manganese ~0.16mg (7% DV). Bioactive compounds: Phthalides (notably 3-n-butylphthalide and sedanolide, concentrated ~0.05–0.1% of volatile oil fraction) — the primary compounds associated with vascular smooth muscle relaxation and blood pressure modulation. Flavonoids including apigenin (~0.2–1mg/100g) and luteolin. Furanocoumarins (psoralen, bergapten) at trace levels (~0.01–0.05mg/100g), relevant for photosensitivity in high-dose supplemental contexts. Polyacetylenes (falcarinol, falcarindiol) with emerging anti-inflammatory data. Phenolic acids including caffeic acid and chlorogenic acid (~10–30mg/100g total). Bioavailability notes: Phthalides are lipophilic and may have improved absorption with dietary fat. Vitamin K1 bioavailability is moderate (~10–20% from raw vegetable matrix) and enhanced with fat co-ingestion. Fiber is predominantly insoluble, with limited prebiotic fermentability compared to soluble fiber sources. Cooking reduces Vitamin C content by ~30–50% but has modest effects on phthalide concentrations.
How It Works
Celeriac's phthalide compounds, particularly 3-n-butylphthalide, promote vasodilation by relaxing smooth muscle cells in blood vessel walls and reducing peripheral vascular resistance. The flavonoid apigenin enhances glucose uptake in muscle cells through GLUT4 transporter activation and may improve pancreatic beta-cell function. These mechanisms collectively support cardiovascular health and glucose homeostasis.
Clinical Evidence
A meta-analysis of 9 randomized controlled trials (n=511) demonstrated that celery preparations significantly reduced both systolic and diastolic blood pressure with moderate-to-high quality evidence. The same meta-analysis showed improvements in fasting blood glucose levels across study participants. However, most research has focused on celery seed extracts rather than celeriac root specifically. Additional clinical trials are needed to establish optimal dosing and confirm these benefits for celeriac consumption.
Safety & Interactions
Celeriac is generally safe when consumed as food, but may cause allergic reactions in individuals sensitive to celery or other Apiaceae family plants. The root contains natural coumarins that could potentially interact with blood-thinning medications like warfarin. Pregnant women should avoid therapeutic doses due to potential uterine stimulant effects, though culinary amounts appear safe. People with kidney disorders should consult healthcare providers before regular consumption due to the vegetable's potassium content.
Also Known As
Frequently Asked Questions
How much celeriac should I eat for blood pressure benefits?
Can celeriac replace blood pressure medication?
Does celeriac have more benefits than regular celery?
Are there any side effects of eating celeriac regularly?
How should celeriac be prepared to maximize health benefits?
Is celeriac safe to consume during pregnancy and breastfeeding?
Does celeriac interact with blood pressure or diabetes medications?
What is the difference between eating celeriac root versus celeriac seed supplements?
Conditions This May Help
This profile shares topic or mechanism tags with the health areas below. The links open provisional public-profile indexes; association does not establish a benefit or clinical recommendation.
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