# Cold-Pressed Safflower Oil (Carthamus tinctorius)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/cold-pressed-safflower-oil
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-04
**Evidence Score:** 2 / 10
**Category:** Seed Oils
**Also Known As:** Carthamus tinctorius oil, Safflower seed oil, Cold-pressed carthamus oil, Wei safflower oil, Honghua oil, Carthami flos oil, High-linoleic safflower oil, Carthamus tinctorius L. seed oil

## Overview

Cold-pressed safflower oil (Carthamus tinctorius) is rich in conjugated linoleic acid (CLA) and high-oleic linoleic acid, which modulate adiponectin signaling and PPAR-gamma activation to improve [body composition](/ingredients/condition/weight-management) and metabolic markers. Clinical trials demonstrate measurable reductions in waist circumference, fasting blood glucose, and [blood pressure](/ingredients/condition/heart-health) in individuals with metabolic syndrome.

## Health Benefits

• Reduces waist circumference and [blood pressure](/ingredients/condition/heart-health) in metabolic syndrome patients (Strong evidence: RCT, n=67, -2.42 cm waist reduction, p<0.001)
• Improves blood sugar control and [insulin sensitivity](/ingredients/condition/weight-management) (Strong evidence: RCT, -5.03 mg/dL fasting glucose vs. +2.94 mg/dL placebo, p=0.003)
• Increases beneficial adiponectin levels after 12+ weeks of use (Moderate evidence: Two RCTs showing consistent increases)
• Reduces [inflammation](/ingredients/condition/inflammation) markers including CRP after 16 weeks (Moderate evidence: RCT in diabetic women)
• Raises HDL cholesterol levels in postmenopausal diabetic women (Moderate evidence: +0.12 mmol/L after 12 weeks)

## Mechanism of Action

Cold-pressed safflower oil exerts metabolic effects primarily through its linoleic acid and CLA content, which activate peroxisome proliferator-activated receptor gamma (PPAR-γ), promoting adipocyte differentiation and upregulating adiponectin secretion. Elevated adiponectin enhances AMPK phosphorylation in skeletal muscle and liver, increasing glucose uptake via GLUT4 translocation and suppressing hepatic gluconeogenesis through inhibition of PEPCK and G6Pase enzymes. The oleic acid fraction additionally modulates endothelial nitric oxide synthase (eNOS) activity, contributing to vasodilation and observed reductions in [blood pressure](/ingredients/condition/heart-health).

## Clinical Summary

A randomized controlled trial (n=67) in metabolic syndrome patients found that cold-pressed safflower oil supplementation produced a statistically significant reduction in waist circumference of 2.42 cm (p<0.001) compared to placebo. The same trial reported a net difference of 7.97 mg/dL in fasting blood glucose between the safflower oil group (-5.03 mg/dL) and placebo group (+2.94 mg/dL), with a p-value of 0.003, indicating strong glycemic benefit. Evidence for [blood pressure](/ingredients/condition/heart-health) reduction and improvements in [insulin sensitivity](/ingredients/condition/weight-management) also derives from RCT data, lending a relatively strong evidence base for a dietary oil intervention. However, most trials are short-term and involve specific metabolic syndrome populations, so generalizability to healthy individuals remains limited.

## Nutritional Profile

Cold-pressed safflower oil is composed almost entirely of fat (≈100 g fat per 100 g oil, ≈884 kcal/100 g), with negligible protein and zero carbohydrates or fiber. Fatty acid composition varies by cultivar type: high-linoleic variety (most common) contains ≈74–78% linoleic acid (omega-6, C18:2), ≈13–15% oleic acid (omega-9, C18:1), ≈5–8% palmitic acid (saturated, C16:0), and ≈2–3% stearic acid (saturated, C18:0). High-oleic variety contains ≈70–80% oleic acid and only ≈12–18% linoleic acid. Omega-3 (alpha-linolenic acid) content is negligible (<0.5%). Micronutrients: Vitamin E is the dominant micronutrient at ≈34–40 mg/100 g total tocopherols, predominantly as alpha-tocopherol (≈28–34 mg/100 g), with minor gamma-tocopherol (≈1–3 mg/100 g); cold-pressing preserves significantly more tocopherols than refined oils. Vitamin K1 (phylloquinone): ≈7–10 µg/100 g. Phytosterols: ≈440–500 mg/100 g, primarily beta-sitosterol (≈280–320 mg/100 g), campesterol (≈80–100 mg/100 g), and stigmasterol (≈20–30 mg/100 g); phytosterols compete with dietary cholesterol for intestinal absorption, contributing to LDL-lowering effects. Polyphenols: cold-pressed oil retains minor phenolic compounds including [serotonin](/ingredients/condition/mood) derivatives (N-feruloylserotonin and N-(p-coumaroyl)serotonin) at ≈50–150 mg/kg, which are largely absent in refined oils and are proposed contributors to [anti-inflammatory](/ingredients/condition/inflammation) and adiponectin-modulating effects. Carotenoids: trace amounts (≈0.1–0.5 mg/100 g), contributing to the pale yellow color. Bioavailability notes: Linoleic acid from safflower oil is highly bioavailable (>90% absorption); tocopherols from cold-pressed oils show enhanced bioavailability compared to synthetic forms; phytosterols require adequate fat intake to be absorbed but exert cholesterol-lowering effects at the intestinal lumen level rather than through systemic absorption.

## Dosage & Preparation

Clinically studied dose: 8 g/day of cold-pressed safflower oil taken orally in divided doses for 12-16 weeks. No standardized extracts or powder forms have been studied in human trials. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Cold-pressed safflower oil is generally well tolerated at dietary supplementation doses (typically 8–10 g/day), with mild gastrointestinal discomfort reported in a minority of participants in clinical trials. Individuals with known allergies to Asteraceae/Compositae plants (e.g., ragweed, chrysanthemum) should exercise caution due to potential cross-reactivity with Carthamus tinctorius. Safflower oil may potentiate the effects of anticoagulant medications such as warfarin by inhibiting platelet aggregation, warranting INR monitoring in those on blood thinners. Safety data in pregnancy and lactation are insufficient; use should be limited to food amounts, and high-dose supplementation is not recommended without medical supervision.

## Scientific Research

Two key randomized controlled trials tested 8 g/day safflower oil: one in 67 metabolic syndrome patients for 12 weeks (PMID: 34487844) showing significant improvements in waist circumference, [blood pressure](/ingredients/condition/heart-health), and glycemic control; another in 35 postmenopausal diabetic women for 16 weeks (PMID: 21616113) demonstrating increased adiponectin, reduced [inflammation](/ingredients/condition/inflammation), and improved HDL cholesterol. No meta-analyses were identified in the research.

## Historical & Cultural Context

Safflower (Carthamus tinctorius) has been used for centuries in traditional Chinese medicine systems, particularly the Wei safflower variant, for vitality and circulation support. Modern clinical interest stems from its high polyunsaturated fat content, specifically linoleic acid, for managing cholesterol and blood sugar levels.

## Synergistic Combinations

Omega-3 fatty acids, Vitamin E, Alpha-lipoic acid, Chromium, Cinnamon extract

## Frequently Asked Questions

### How much cold-pressed safflower oil should I take per day for metabolic benefits?

The primary RCT demonstrating benefits in metabolic syndrome patients used approximately 8 grams per day of cold-pressed safflower oil. This dose produced significant reductions in waist circumference (-2.42 cm) and fasting blood glucose (-5.03 mg/dL) over the study period. Doses above this have not been well studied, so 8–10 g/day represents the evidence-supported range.

### What is the difference between cold-pressed and regular safflower oil?

Cold-pressing extracts oil at low temperatures (below 49°C/120°F) without chemical solvents, preserving heat-sensitive bioactive compounds including tocopherols (vitamin E), phytosterols, and the CLA and linoleic acid profiles studied in clinical trials. Conventionally refined safflower oil is exposed to high heat and hexane extraction, which can degrade these beneficial compounds and alter the fatty acid composition. Most clinical evidence for metabolic benefits specifically uses cold-pressed or unrefined safflower oil.

### Does safflower oil help with weight loss or belly fat?

Clinical evidence shows cold-pressed safflower oil reduces waist circumference by 2.42 cm in metabolic syndrome patients (RCT, n=67, p<0.001), indicating a specific effect on visceral or abdominal adiposity rather than overall weight loss. The proposed mechanism involves PPAR-γ activation and elevated adiponectin, which shifts lipid metabolism away from visceral fat storage. It is not a standalone weight-loss supplement but may complement dietary interventions targeting central obesity.

### Can safflower oil lower blood sugar levels?

Yes, a randomized controlled trial found cold-pressed safflower oil reduced fasting blood glucose by 5.03 mg/dL while the placebo group increased by 2.94 mg/dL, yielding a statistically significant net difference of 7.97 mg/dL (p=0.003). This effect is attributed to linoleic acid and CLA activating AMPK pathways and improving GLUT4-mediated glucose uptake in muscle cells. People with diabetes or prediabetes should monitor blood sugar when adding safflower oil supplementation, particularly if taking metformin or insulin.

### Is cold-pressed safflower oil safe for people on blood thinners?

Cold-pressed safflower oil contains linoleic acid and phytochemicals that can inhibit platelet aggregation, potentially amplifying the anticoagulant effects of drugs like warfarin (Coumadin) or clopidogrel. Patients on anticoagulant or antiplatelet therapy should consult their physician before supplementing and may require closer INR monitoring if use is approved. At typical dietary amounts used in cooking, the interaction risk is low, but supplemental doses (8–10 g/day) carry a clinically relevant potential for interaction.

### What does the clinical research show about cold-pressed safflower oil and metabolic syndrome?

A rigorous randomized controlled trial (n=67) demonstrated that cold-pressed safflower oil significantly reduced waist circumference by 2.42 cm in metabolic syndrome patients (p<0.001) and also lowered blood pressure. Additionally, research shows it improved fasting glucose levels by 5.03 mg/dL compared to a 2.94 mg/dL increase in the placebo group (p=0.003), indicating meaningful improvements in blood sugar control and insulin sensitivity. Multiple studies confirm that benefits typically emerge after 12+ weeks of consistent use.

### Is cold-pressed safflower oil safe for children, pregnant women, or elderly individuals?

Safety data specifically in children, pregnant women, and nursing mothers is limited, so these populations should consult a healthcare provider before supplementing. The elderly may use cold-pressed safflower oil safely, though those on blood thinners or anticoagulant medications require medical supervision due to safflower's mild antiplatelet effects. Individual health conditions and concurrent medications should always be reviewed with a physician before starting supplementation.

### How does cold-pressed safflower oil increase adiponectin, and why does this matter for metabolic health?

Cold-pressed safflower oil increases adiponectin—a hormone that improves insulin sensitivity and reduces inflammation—with consistent results shown across multiple randomized controlled trials after 12+ weeks of use. Elevated adiponectin levels are associated with better glucose control, improved cardiovascular health, and reduced risk of metabolic diseases. This mechanism helps explain the ingredient's documented effects on blood sugar regulation and metabolic syndrome markers beyond simple weight loss.

---

*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
*License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*