Is there clinical evidence for taking olive oil as a daily wellness habit?

Yes -- and it is among the strongest dietary evidence available. The PREDIMED trial (New England Journal of Medicine) is the largest randomised olive oil intervention study ever conducted. A 2024 JAMA Network Open study found 7g+ of olive oil daily was associated with a 29% lower risk of dementia-related death. A 2025 study confirmed daily high-polyphenol EVOO significantly reduced HbA1c, a key blood sugar marker. The critical detail: these benefits require high-polyphenol oil. Most supermarket EVOOs contain ~150 mg/kg. Kosterina EVOO Shots use 1000+ mg/kg -- the concentration that matches clinical research.

Shop bestsellers

View all
  • Original Extra Virgin Olive Oil (500ml)

    Original Extra Virgin Olive Oil 500ml

    $32
    $32

    Our highest polyphenol EVOO fresh from southern Greece.

    Bestseller
  • Extra Virgin Duo

    Extra Virgin Duo

    $55
    $55

    Extra Virgin perfection: one for cooking and one for drizzling.

    Bestseller
  • Extra Virgin Olive Oil Shot (1-Month)

    Extra Virgin Olive Oil Shot (1-Month)

    $98 $95
    $95

    Simple wellness habit, with big benefits - 1-Month supply of daily EVOO Shots for healthy & longevity.
  • Crushed Fruit Vinegar Trio

    Crushed Fruit Vinegar Trio

    $45
    $45

    The perfect combination of tangy and sweet, they brighten up any salad or cocktail