Perhaps the most potent of the herbs, oregano contains four times more antioxidants than blueberries. Active components include thymol and carvacrol, antibacterial agents that help fight off infection. Oregano is also a good source of vitamin K (essential for bone and heart health), fiber and several minerals including manganese.
Use it: Oregano is common in Mediterranean cooking—use fresh for maximum benefit and pair with tomatoes, eggplants and grilled or roasted meats. Or use in salad dressings, marinades and sprinkled onto eggs.