Why do leafy green vegetables interact with some old fashioned blood thinners❓ https://www.livescience.com/health/medicine-drugs/why-do-leafy-green-vegetables-interact-with-blood-thinners It comes down to the high vitamin K content in kale, spinach, collard greens, Swiss chard, cabbage, broccoli and Brussels sprouts — containing more than 150 μg per serving❗️