Seed oils (like soybean, sunflower, canola) and extra virgin olive oil differ mainly in fat structure and processing: seed oils are high in omega-6 polyunsaturated fats and are usually heavily refined, while olive oil is rich in monounsaturated fats (oleic acid) and contains natural antioxidants and polyphenols because it is minimally processed. From a health perspective, extra virgin olive oil is consistently linked to better heart health and reduced inflammation, especially in Mediterranean diet studies, while seed oils are not inherently “toxic,” but high intake of omega-6 fats (especially from ultra-processed foods) may contribute to an imbalanced omega-6 to omega-3 ratio. For cooking, olive oil is best for low-to-medium heat and daily use, while refined seed oils have higher smoke points but lose more nutrients during processing. Overall, olive oil is generally considered the healthier default choice for long-term wellness, while seed oils are better used in moderation rather than as a primary fat source.