Sunflower oil is marketed as a heart-healthy choice—but what if the science tells a different story?
Sunflower oil is rich in omega-6 polyunsaturated fats, particularly linoleic acid. While omega-6s are essential, the typical modern diet contains too much of omega-6 fatty acids compared to omega-3 fatty acids. The ideal omega-6 to omega-3 ratio is 1:1 to 4:1. But unfortunately in case of regular sunflower oil it is 40:1. This promotes chronic inflammation—one of the root causes of heart disease, diabetes, obesity, and autoimmune conditions.
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Prashanth Reddy Cheruku
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I created this platform with a mission: to educate people worldwide about Food Science, Nutrition & Preventive Healthcare. Our ultimate goal is to enhance both lifespan and healthspan—not just for people, but for PETS too!
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📍 Indian Institute of Technology (IIT) Kharagpur
Sunflower oil oxidizes rapidly at high temperatures, such as during frying. This oxidation forms aldehydes and other toxic compounds. These are linked to DNA damage and neurodegenerative diseases.
Frequent use of sunflower oil in high-heat cooking could contribute to oxidative stress and inflammation in humans.
Not all sunflower oil is equal, though. High-oleic variants are more stable and less prone to oxidation, making them a better option for cooking.
Bottom line: while sunflower oil isn’t “poison,” its overuse—especially for frying—can carry hidden health risks. Choosing oils with a better omega-6 to omega-3 ratio and higher oxidative stability may be a smarter move. You can choose oils such as olive, rice bran, avocado, mustard, safflower or canola oils instead. But if you still want to use sunflower oil over others then try to choose cold pressed, minimally processed high oleic sunflower oil variety.
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