Sunflower Oil: Nutrients, What Research Shows and Safety

Sunflower oil is pressed from the seeds of the sunflower plant, Helianthus annuus (family Asteraceae). It is a liquid cooking and salad oil, and it is mostly fat: about 100 g of fat in every 100 g. [1] People use it for frying, baking and dressings, and it is one of the best-known sources of vitamin E in food. [2] Sunflower oil comes in different types (high in linoleic acid, "mid-oleic" or "high-oleic"), and the type changes the fat profile. This page keeps the oil apart from the whole seed and from hype.

Read this first

• It is pure fat and energy dense. USDA lists about 120 kcal in 1 tablespoon (13.6 g). [1]
• The type matters. USDA lists a linoleic type (about 66 g polyunsaturated fat per 100 g) and a mid-oleic type (about 45 g monounsaturated fat per 100 g). Both have about 10 g saturated fat per 100 g. [1] [3] The FDA qualified claim on oleic acid oils covers oils with at least 70% oleic acid, such as high-oleic sunflower oil. [4]
• Evidence in one line: swapping saturated fat for unsaturated oils lowers LDL cholesterol and, in pooled trials, heart events. [5] [6] We found no trial showing sunflower oil is better than other unsaturated oils, and it has no proven effect on inflammation in either direction. [7]
• No major allergen: sunflower is not one of the nine major food allergens named by the FDA. [8] Seed allergies are rare and little studied. [9] For trouble breathing or swelling of the face or throat after any food, call 911 (or your local emergency number).
• Medicines: we found no source linking sunflower oil as a food to a medicine interaction.

What is in it (USDA values)

The values below are for sunflower oil, linoleic type (about 65% linoleic acid), USDA FoodData Central item 171025, SR Legacy. [1] The serving column is the USDA household portion of 1 tablespoon, 13.6 g. [1]

% Daily Value uses the FDA 2016 Daily Values. Serving figures are the 100 g values multiplied by 0.136. USDA lists zero for the last three rows, including 0 mg potassium and 0 mg phosphorus. [1] Oils vary with the plant variety and refining. USDA also lists a vitamin D value for this item, but it looks like a database artifact for a plant oil, so we do not report it.

A different type: mid-oleic. USDA item 171017 (sunflower oil, linoleic less than 60%) has 10.1 g saturated, 45.4 g monounsaturated and 40.1 g polyunsaturated fat per 100 g, with the same 884 kcal and 41.08 mg vitamin E per 100 g. [3] Trials and the FDA letter often use mid-oleic or high-oleic types, so read which type a study used. [10] [4]

Plant compounds: USDA lists plant sterols (phytosterols) at 100 mg per 100 g for this item and vitamin E as alpha-tocopherol. [1] We did not read a trial showing these compounds act in people when taken in the amount found in cooking oil.

What research says

Eaten as food vs taken as supplement. All the trials above used the oil as part of food. We did not read any trial of sunflower oil capsules. The FDA considered a qualified health claim for high-oleic oils: it rated the evidence "supportive but not conclusive" and said the oil should replace saturated fat, not add calories. [4]

How much is a normal serving

The USDA household portion is 1 tablespoon (13.6 g), with about 120 kcal. [1] That is information from USDA data, not a prescription. The FDA letter on high-oleic oils mentions about 20 g (about 1.5 tablespoons) a day in its claim wording; this is a labeling figure, not advice. [4] The 2025-2030 Dietary Guidelines say saturated fat should in general stay under 10% of daily calories and name olive oil, butter and beef tallow when they talk about cooking fats; they do not name sunflower oil in the pages we read. [16] The NHS lists sunflower oil as a source of omega-6 polyunsaturated fat and says men should have no more than 30 g and women no more than 20 g of saturated fat a day. [17]

Safety, allergy and medicines

• Calories: 1 tablespoon is about 120 kcal. [1] The FDA letter says oleic oils should replace saturated fat and not increase total calories. [4]
• Allergy: sunflower is not on the FDA list of nine major allergens (milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans and sesame). [8] Seed allergies are described as rare, with little literature outside sesame. [9] Highly refined oils are exempt from major-allergen labeling in the US, but the plant source must still be in the ingredient name. [18] We did not find a source on reactions to sunflower oil specifically. For trouble breathing or swelling of the face or throat, call 911 (or your local emergency number).
• Heating and frying: we did not read a study of sunflower oil emissions or health effects when heated. One kitchen study compared palm, olive and soybean oils, not sunflower. [19] Proper evidence not found in the sources we read for sunflower oil.
• Vitamin E: vitamin E from food is considered safe. High-dose vitamin E supplements may raise the risk of bleeding in the brain. [2] An oil serving is far below supplement doses. Ask a clinician if you take blood thinners.
• Trans fat: the FDA ruled in 2015 that partially hydrogenated oils are not generally recognized as safe; trace trans fat can occur naturally in meat, dairy and very low levels in some other oils. [20] Liquid sunflower oil is not a partially hydrogenated oil. We did not find a trans fat value for it in USDA item 171025.
• Pregnancy, children, kidney disease, diabetes: we did not find official advice restricting culinary sunflower oil in these groups in the sources we read. USDA lists zero potassium, phosphorus, sodium and carbohydrate. [1] See foods in pregnancy and kidney disease and foods.

Choosing, storing and food safety

• Check the label for the type (linoleic, mid-oleic or high-oleic), because the fat profile differs. [1] [3]
• Under US rules the plant source of an oil must be part of its name in the ingredient list. [18]
• We did not read a source with specific storage or smoke-point advice for sunflower oil. See smoke points and cooking with oil and storing nuts and seeds.

Related pages

• Sunflower seeds
• Seed oils and inflammation: claims checked
• Which cooking fat to choose: what health bodies say
• Saturated, unsaturated and trans fats explained
• Foods for cholesterol and heart health
• Safflower oil