What Are the Health Effects of Hemp Oil?

Hemp oil has staged a remarkable comeback in recent years as a superfood — but what is truly unique about it and what health effects of hemp oil does current research actually support? In this article we will cover the nutritional profile of hemp seed oil, its proven and promising effects on the heart, skin and inflammation, and we will clarify the crucial difference between hemp oil and CBD oil — terms that are frequently and incorrectly used interchangeably in European shops.

What Is Hemp Oil and How Is It Made

Hemp oil (also called hempseed oil or hemp seed oil) is produced by cold-pressing the ripe seeds of the Cannabis sativa L. plant — the industrial, non-psychoactive variety of cannabis. The highest-quality hemp oil is obtained by cold-pressing at temperatures below 40 °C, which preserves the maximum amount of heat-sensitive nutrients.

Ripe hemp seeds contain virtually no CBD or THC — cannabinoids are concentrated primarily in the flowers and leaves, not in the seeds. This is why hemp oil is a freely sold food product without any regulatory restrictions, unlike flower-derived cannabis extracts.

It is important to clarify the terminology right at the start, as European consumers often mix these up:

• Hemp oil (hempseed oil) — oil from cannabis seeds, rich in omega fatty acids, contains no CBD or THC
• CBD oil — extract from cannabis flowers and leaves, contains the cannabinoid CBD, sold as a food supplement
• Hash/THC oil — concentrated extract containing THC, illegal in most countries

We will return to this difference in detail in its own section. First, let us look at why hemp oil is nutritionally exceptional.

Nutritional Profile of Hemp Oil

Hemp seeds are botanically speaking nuts and contain approximately 30% oil and 25% high-quality protein. The oil extracted from them has a unique fatty acid profile found in very few other foods.

Omega-3 and Omega-6 in the Ideal 3:1 Ratio

Hemp oil contains more than 80% polyunsaturated fatty acids (PUFA) and is exceptionally rich in two essential fatty acids — linoleic acid (omega-6) and alpha-linolenic acid (omega-3). According to the foundational study by Callaway published in Euphytica in 2004, the ratio of omega-6 to omega-3 in hemp oil is typically 2:1 to 3:1, which nutrition experts consider the optimal ratio for human health.

For comparison, the typical Western diet has an omega-6 to omega-3 ratio of around 10–15:1, which is associated with higher levels of chronic inflammation and cardiovascular risk. A recent review published in Frontiers in Nutrition in September 2025 confirmed that hemp oil can be a valuable tool for correcting this imbalance.

Gamma-Linolenic Acid (GLA) — a Rare Omega-6

In addition to the classic essential fatty acids, hemp oil also contains gamma-linolenic acid (GLA) — a rare form of omega-6 that the body normally synthesises only in limited quantities. GLA is found in just a handful of plant oils (evening primrose oil, borage oil, blackcurrant seed oil) and has documented anti-inflammatory effects. Although it is an omega-6 fatty acid, GLA acts differently from typical omega-6 fats — it does not promote inflammation but rather helps regulate it.

Hemp oil also contains small amounts of stearidonic acid (SDA) — an omega-3 fatty acid that is more efficiently converted in the body to EPA (the form useful for heart and brain health) than standard alpha-linolenic acid.

Vitamins, Minerals and Antioxidants

Beyond fatty acids, hemp oil contains other valuable micronutrients:

• Vitamin E (tocopherols) — a potent antioxidant protecting cell membranes
• Phytosterols — plant sterols with documented cholesterol-lowering effects
• Polyphenols — bioactive compounds with antioxidant action
• Chlorophyll — gives the oil its greenish colour
• Trace elements — magnesium, potassium, phosphorus, zinc, iron

Health Effects of Hemp Oil According to Research

Let us now look at the specific health effects of hemp oil examined by scientific research. While most evidence comes from preclinical and observational studies, the evidence base continues to grow.

Cardiovascular Health

The best-supported area where hemp oil health effects show a clear positive signal. The Frontiers in Nutrition review from 2025 critically summarised the evidence for cardioprotective effects of hemp oil and identified several mechanisms:

• Improved lipid profile — reduction of LDL cholesterol and triglycerides with regular consumption
• Lower blood pressure — particularly in people with hypertension
• Antithrombotic effect — reduced platelet aggregation
• Anti-inflammatory action — reduction of chronic inflammation in vessel walls
• Antioxidant protection — tocopherols protect LDL from oxidation

Animal studies suggest hemp oil may help the heart recover more quickly after myocardial infarction, though human RCTs in this area are still lacking.

Inflammation and Immunity

Thanks to its GLA content and optimal omega-6:omega-3 ratio, hemp oil has anti-inflammatory potential. GLA is converted in the body to prostaglandin E1, which acts against inflammation and supports immune regulation. Studies in patients with rheumatoid arthritis show that supplementation with GLA-rich oils can reduce joint stiffness and tenderness.

If you are looking for broader anti-inflammatory support, also read the article CBD for pain and inflammation, where we cover the stronger evidence for CBD as a cannabinoid.

Skin and Hair

Hemp oil is one of the most popular plant oils for skin care. A study published in the Journal of Dermatological Treatment followed patients with atopic dermatitis (eczema) who consumed hemp oil orally for 20 weeks. The result: significant improvement in symptoms including less itching, reduced skin dryness, and improved essential fatty acid levels in the blood.

Hemp oil is well suited for:

• Dry and cracked skin — thanks to linoleic acid, which restores the lipid barrier
• Atopic eczema and psoriasis — anti-inflammatory effect both topically and internally
• Acne — paradoxically — hemp oil has a comedogenicity of 0, meaning it does not clog pores
• Premature skin ageing — tocopherols fight free radicals
• Hair and scalp — improves hydration and reduces dryness

Our shop also offers natural hemp cosmetics that leverage these properties of hemp oil in combination with other botanical ingredients.

Hormonal Balance (PMS and Menopause)

GLA in hemp oil may help with premenstrual syndrome (PMS). Some studies suggest that GLA supplementation reduces breast tenderness, irritability and cramping associated with PMS. During menopause, hemp oil may be beneficial thanks to its antioxidant tocopherols and support for hormonal balance.

Digestive System

Hemp oil contains small amounts of natural chlorophyll and plant compounds that support intestinal motility and regular bowel movements. The combination with high-quality plant protein from hemp seeds makes hemp flour and oil an interesting component of a healthy diet.

Hemp Oil vs. CBD Oil — a Critical Difference

This is one of the most important points in the entire article, because these terms are routinely confused — leading to poor purchasing decisions. Here is a direct comparison:

Parameter	Hemp oil (hempseed)	CBD oil
Source	Pressed hemp seeds	Extract from cannabis flowers and leaves
CBD content	0% (trace amounts)	Typically 5–30%
THC content	0%	<0.2% (legal limit)
Classification	Food	Food supplement
Primary value	Fatty acids (omega-3, omega-6, GLA)	Cannabidiol (CBD)
Use	Diet, cosmetics	Sublingual administration, wellness support
Price per bottle	Lower (€10–20 per 500 ml)	Higher (€30–60 per 10 ml at 10%)
Drops under tongue?	Yes, but only as food	Yes, sublingual dosing

Practical conclusion: If you are looking for cardiovascular health support, quality fatty acids in your diet, or a natural product for your skin, reach for hemp oil. If you are looking for support with anxiety, sleep, pain or inflammation, you should explore CBD oil. These are two completely different product categories with entirely different mechanisms of action. For more on how CBD works in the body, see the article CBD drops and their effects.

How to Consume Hemp Oil

Hemp oil has a sensitive profile — its high polyunsaturated fatty acid content makes it susceptible to oxidation. Several rules apply to its use:

• Never heat it or fry with it — high temperatures destroy essential fatty acids and produce health-damaging peroxides
• Use it cold — as a salad dressing, drizzled over finished dishes, in smoothies or dips
• Store in the refrigerator — after opening it keeps for approximately 4–6 weeks
• Choose dark glass bottles — these protect the oil from light-induced oxidation
• Typical daily dose — 1–2 tablespoons per day (15–30 ml) as part of the diet

Hemp oil has a mildly nutty, grassy taste that works well in Mediterranean salads, smoothies, and cold-served soups.

How to Choose a Quality Hemp Oil

The hemp product market is saturated — from cheap refined oils to premium cold-pressed varieties. To get the maximum health effects from hemp oil, look for these criteria:

• Cold-pressed below 40 °C — preserves thermolabile GLA and tocopherols; refined oils may retain a fraction of the original nutritional value
• Dark glass — protects against light oxidation; a clear plastic bottle signals lower quality
• Pressing date — not just the best-before date; ideally buy oil within 6 months of pressing
• Origin — European hemp meets stricter agronomic standards; avoid oils with no declared origin
• Greenish colour — the natural colour of chlorophyll; colourless oil is often refined
• Nutty-grassy aroma — quality oil should smell “fresh”; a bitter or rancid odour indicates advanced oxidation

When making your choice, it also helps to know whether the producer grows the hemp themselves or simply processes purchased seeds — own production generally means better quality control. In our portfolio you will find nutritional supplements made from hemp and a wider range of hemp products.

Practical Ideas for Including Hemp Oil in Your Diet

To actually get the health effects of hemp oil, you need to consume it regularly, not just occasionally. Start with 1 tablespoon per day (15 ml) and gradually increase to 2 tablespoons. Here are tried-and-tested ways to incorporate it easily:

• Salad dressing — 1 tbsp oil, 1 tsp lemon juice, salt, pepper, a spoonful of mustard
• Smoothie — 1 tbsp blended into any fruit or vegetable smoothie; the flavour disappears
• Cottage cheese spread — a spoonful of oil mixed into cottage cheese with herbs and garlic
• Avocado dip — guacamole with hemp oil is a nutritional powerhouse on toast
• After cooking — a spoonful drizzled over hot mash, rice or potatoes just before serving
• Baby food — a few drops added to fruit purée for children from 1 year (for an adult omega-3:6 boost)

To maximise hemp oil health effects, we recommend combining it daily with other plant-based omega-3 sources (walnuts, flaxseeds, chia seeds) and reducing industrially processed oils high in omega-6 (sunflower, corn).

Safety and Limitations

Hemp oil is generally very well tolerated and has no known serious side effects. A few situations do warrant attention:

• Anticoagulant medication — if you are taking warfarin or other blood thinners, consult your doctor about a higher omega-3 intake, which may increase the effect
• Low blood pressure — regular consumption may lower blood pressure further
• Planned surgery — discontinue 2 weeks before due to a mild antithrombotic effect
• Nut allergy — rare, but cross-reaction is possible
• Pregnancy and breastfeeding — the safety profile is generally good, but it is always advisable to consult a doctor

Hemp oil does not cause a positive drug test, as it contains no measurable amount of THC.

Summary: What Hemp Oil Brings to Your Diet

The health effects of hemp oil are well supported by science particularly in the areas of cardiovascular health, inflammation regulation, skin care and hormonal balance — primarily due to its unique omega-3 to omega-6 fatty acid ratio and the presence of rare GLA. It is important, however, not to confuse it with CBD oil, which has a completely different profile and a completely different use case. When choosing hemp oil, opt for cold-pressed varieties from trustworthy producers — at our farm under the Kriváň peak we are committed to sustainable hemp processing, and in our range of hemp products you will find quality nutritional supplements and natural cosmetics.

Sources

• Callaway JC. Hempseed as a nutritional resource: An overview. Euphytica, 2004;140:65–72
• Frontiers in Nutrition, Dietary hempseed and cardiovascular health: nutritional composition, mechanisms and comparison with other seeds, September 2025
• Healthline, 6 Proven Health Benefits of Hemp Seeds
• WebMD, Hemp Seed Oil: Health Benefits, Nutrition, Dosage, and More
• Wang Q, Xiong YL. Processing, Nutrition, and Functionality of Hempseed Protein: A Review. Comprehensive Reviews in Food Science and Food Safety, 2019