Science Forums 2

[maikeru]

Green and black teas, because of the tannins and polyphenols in them (especially the flavonoids) seem to possess anti-bacterial and anti-viral activity. The polyphenols and tannic acids stick to and mess up protein receptors on bacteria and viruses. Also, the strong antioxidants help to regulate and moderate the immune system.

Blueberries, boysenberries, cranberries (as I think someone already mentioned), and a few other berries which are rich in antioxidants and polyphenols also have a lot of anti-pathogenic action. IIRC, Native Americans would sometimes dry blueberries or their leaves and powder them to use for wounds and sores to prevent infection. The anthocyanins and other chemicals in blueberries seem to affect bacteria, viruses, and fungi by similar mechanisms as in tea and also boost the immune system and lower blood pressure.

In addition to oregano, which is a fabulous herb, rosemary is also noted for its anti-bacterial and anti-viral oils. Many members of the mint family have medicinal as well as culinary uses.