Is organic olive oil better than regular olive oil?

Organic certification means the olives were grown without synthetic pesticides, herbicides, or fertilisers -- reducing your exposure to chemical residues. Beyond certification, what matters most for health benefits is polyphenol content: Kosterina Organic Everyday EVOO has 350+ mg/kg polyphenols, significantly above most organic and non-organic competitors. You get both the certification and the nutritional quality.