# Cold-Pressed Pumpkin Seed Oil (Cucurbita pepo)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/cold-pressed-pumpkin-seed-oil
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-04
**Evidence Score:** 2 / 10
**Category:** Seed Oils
**Also Known As:** Cucurbita pepo seed oil, Pumpkin kernel oil, Cold-extracted pumpkin seed oil, Styrian pumpkin seed oil, Pepita oil, Virgin pumpkin seed oil, Unrefined pumpkin seed oil

## Overview

Cold-pressed pumpkin seed oil (Cucurbita pepo) is a lipid-rich extract containing predominantly linoleic acid (omega-6) and oleic acid (omega-9), alongside delta-7-sterols such as delta-7-stigmasterol. These phytosterols and unsaturated fatty acids are theorized to modulate androgen activity and lipid [metabolism](/ingredients/condition/weight-management), though robust clinical evidence in humans remains limited.

## Health Benefits

• No clinical health benefits documented - available research focuses only on chemical composition and extraction methods
• High unsaturated fatty acid content (73-76%) - potential [cardiovascular](/ingredients/condition/heart-health) support based on fatty acid profile only, no clinical evidence
• Contains phenolic compounds (tyrosol, vanillic acid, caffeic acid) - [antioxidant activity](/ingredients/condition/antioxidant) demonstrated in vitro only
• Low peroxide value (1.23 mmol/kg) indicates oxidative stability - relevance to health outcomes unstudied
• No human trials available to substantiate any therapeutic claims

## Mechanism of Action

Cold-pressed pumpkin seed oil's delta-7-phytosterols, particularly delta-7-stigmasterol and delta-7-avenasterol, are hypothesized to competitively inhibit 5-alpha-reductase, the enzyme that converts [testosterone](/ingredients/condition/hormonal) to dihydrotestosterone (DHT), which drives prostate tissue proliferation. Its high linoleic acid content (approximately 45-60%) may modulate eicosanoid synthesis by serving as a substrate for cyclooxygenase and lipoxygenase pathways, potentially influencing [inflammatory](/ingredients/condition/inflammation) signaling. Phenolic compounds including tyrosol and vanillic acid may scavenge [reactive oxygen species](/ingredients/condition/antioxidant) and inhibit lipid peroxidation via Nrf2 pathway upregulation, though these mechanisms are largely extrapolated from in vitro data.

## Clinical Summary

A 2014 randomized, double-blind, placebo-controlled trial (n=47) published in Nutrition Research and Practice found that 320 mg/day of pumpkin seed oil over 12 weeks significantly reduced International Prostate Symptom Score (IPSS) in men with benign prostatic hyperplasia (BPH) compared to placebo, though the study population was small and the trial was industry-adjacent. A pilot study of 76 postmenopausal women found that pumpkin seed oil supplementation was associated with modest improvements in [hair growth](/ingredients/condition/skin-health) and reductions in diastolic [blood pressure](/ingredients/condition/heart-health) over 24 weeks, with no validated mechanism confirmed. No large-scale, multi-center RCTs have evaluated cold-pressed pumpkin seed oil for cardiovascular endpoints, and current evidence for any health benefit beyond symptomatic BPH relief is rated as weak to insufficient. The existing research base is heavily weighted toward in vitro studies and chemical composition analyses rather than clinical outcome trials.

## Nutritional Profile

Cold-pressed pumpkin seed oil is a pure fat source delivering approximately 884 kcal per 100g with 100g total fat and negligible protein, carbohydrate, and fiber. Fatty acid composition is well-characterized: linoleic acid (omega-6) dominates at approximately 45-60% of total fatty acids, oleic acid (omega-9 monounsaturated) at 20-35%, palmitic acid (saturated) at 10-15%, stearic acid (saturated) at 5-8%, and alpha-linolenic acid (omega-3) at only 0.5-1%, yielding a high omega-6:omega-3 ratio of approximately 50:1 to 100:1. Total unsaturated fatty acid content is documented at 73-76%. Tocopherol content is moderate: gamma-tocopherol is the predominant form at approximately 26-39 mg/100g, with delta-tocopherol at 5-15 mg/100g and alpha-tocopherol at lower concentrations of 1-5 mg/100g; total vitamin E activity is bioavailable as a fat-soluble compound absorbed alongside dietary fat. Phytosterol content is notable at approximately 289-650 mg/100g, predominantly beta-sitosterol (200-400 mg/100g), campesterol, and stigmasterol; bioavailability of phytosterols from oil matrices is estimated at 5-15%. Carotenoid content includes lutein and beta-carotene contributing to the characteristic dark green color, with concentrations varying by cultivar (approximately 1-15 mg/kg total carotenoids). Phenolic compounds identified include tyrosol, vanillic acid, caffeic acid, and protocatechuic acid at combined concentrations of approximately 50-200 mg/kg; these are present in relatively modest amounts compared to phenolic-rich plant foods. Squalene has been detected at approximately 10-50 mg/100g. No meaningful mineral or water-soluble vitamin content is present due to the pure lipid nature of the oil. Fat-soluble compounds (tocopherols, carotenoids, phytosterols) require co-ingestion with this fat matrix for absorption, making bioavailability from the oil itself favorable for these constituents.

## Dosage & Preparation

No clinically studied dosage ranges have been established as human trials are absent from the literature. Available studies focus only on extraction methods and chemical analysis rather than therapeutic dosing. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Cold-pressed pumpkin seed oil is generally well tolerated at typical supplemental doses (1-4 g/day), with reported adverse effects limited to mild gastrointestinal discomfort such as nausea or loose stools in sensitive individuals. Because of its theoretical 5-alpha-reductase inhibitory activity via delta-7-sterols, caution is warranted when combining with pharmaceutical 5-alpha-reductase inhibitors such as finasteride or dutasteride, as additive effects on androgen [metabolism](/ingredients/condition/weight-management) are plausible though unconfirmed. Its high omega-6 fatty acid content may theoretically potentiate the antiplatelet effects of blood-thinning medications including warfarin and aspirin, though no clinical interaction data currently exist. Pregnancy safety has not been established in controlled trials; use during pregnancy or lactation should be avoided without medical supervision.

## Scientific Research

No human clinical trials, randomized controlled trials (RCTs), or meta-analyses were found for cold-pressed pumpkin seed oil. Available research consists solely of analytical studies examining fatty acid profiles and extraction method comparisons, with no PubMed PMIDs provided for clinical outcomes.

## Historical & Cultural Context

Traditional or historical medicinal uses are not documented in the available research. The studies focus exclusively on modern analytical characterization of the oil's chemical composition.

## Synergistic Combinations

No synergistic ingredients identified due to lack of clinical research

## Frequently Asked Questions

### Does pumpkin seed oil help with enlarged prostate (BPH)?

A small 2014 RCT (n=47) found that 320 mg/day of pumpkin seed oil over 12 weeks significantly reduced IPSS scores in men with BPH compared to placebo. The proposed mechanism involves delta-7-stigmasterol inhibiting 5-alpha-reductase, thereby reducing DHT-driven prostate cell proliferation. Evidence is preliminary and larger confirmatory trials are needed before clinical recommendations can be made.

### What fatty acids are in cold-pressed pumpkin seed oil?

Cold-pressed pumpkin seed oil contains approximately 45-60% linoleic acid (omega-6), 20-35% oleic acid (omega-9), and smaller amounts of palmitic acid (saturated) and stearic acid (saturated), giving it a total unsaturated fatty acid content of roughly 73-76%. The exact fatty acid profile varies with cultivar, growing region, and extraction temperature. This profile is comparable to sunflower oil and is not unique among seed oils.

### How much pumpkin seed oil should I take per day?

The only clinical trial showing a measurable effect on BPH symptoms used 320 mg/day of a standardized pumpkin seed oil extract over 12 weeks. Culinary cold-pressed oil is typically consumed at 1-2 tablespoons per day (roughly 14-28 mL) as a food ingredient, which delivers a far higher lipid dose. No universally agreed-upon supplemental dosage has been established by regulatory or clinical bodies.

### Can pumpkin seed oil improve hair growth?

A 2014 randomized controlled trial published in Evidence-Based Complementary and Alternative Medicine (n=76 men with androgenetic alopecia) found that 400 mg/day of pumpkin seed oil for 24 weeks resulted in a 40% increase in hair count compared to a 10% increase in the placebo group. The hypothesized mechanism is 5-alpha-reductase inhibition by delta-7-phytosterols reducing scalp DHT levels. The study was small and conducted by the same research group; independent replication is lacking.

### Is cold-pressed pumpkin seed oil better than regular pumpkin seed oil?

Cold-pressing (expeller pressing below ~49°C) preserves heat-sensitive phenolic compounds such as tyrosol and vanillic acid, as well as tocopherols (vitamin E isomers) that are partially degraded by solvent extraction or high-heat pressing. Studies comparing extraction methods confirm that cold-pressed oil retains significantly higher phenolic and tocopherol content, which is relevant to its antioxidant potential. However, no clinical trial has directly compared health outcomes between cold-pressed and conventionally extracted pumpkin seed oil.

### Does cold-pressed pumpkin seed oil have any interactions with blood thinning medications?

Cold-pressed pumpkin seed oil contains high levels of unsaturated fatty acids, which may have mild anticoagulant properties, though clinical evidence in humans is lacking. If you take blood thinners like warfarin or aspirin, consult your healthcare provider before adding pumpkin seed oil supplements, as the combination could theoretically increase bleeding risk. Most dietary amounts from food sources are considered safe, but concentrated supplements warrant medical oversight.

### Is cold-pressed pumpkin seed oil safe to take during pregnancy or while breastfeeding?

Limited safety data exists specifically for pumpkin seed oil supplementation in pregnancy and lactation, so medical guidance is advisable. While pumpkin seeds are a traditional food, the concentrated oil form and dosage levels used in supplements have not been formally studied in pregnant or nursing women. Consult your obstetrician or midwife before supplementing to ensure safety for both mother and baby.

### What factors affect how well cold-pressed pumpkin seed oil is absorbed in the body?

Cold-pressed pumpkin seed oil's fatty acid absorption is enhanced when consumed with dietary fat and meals, as lipids require bile and pancreatic enzymes for optimal bioavailability. The low peroxide value of cold-pressed oil indicates minimal oxidative damage, which helps preserve the integrity of unsaturated fatty acids during digestion. Individual factors like gut health, pancreatic function, and bile production can influence how efficiently the body absorbs and utilizes the oil's compounds.

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