What are the differences between refined oil and unrefined oil, and how do these differences impact their nutritional value and health benefits?

Refined oil undergoes processing to remove impurities and enhance its shelf life, while unrefined oil is minimally processed and retains more natural nutrients. The refining process can strip some nutrients from the oil, reducing its nutritional value. Unrefined oil may have a stronger flavor and more antioxidants, making it potentially healthier.