Herbs have been used by the Chinese and certain primitave tribes in South America and Africa for over a thousand years. Some herbalists believe herbs can provide cures for virtually any ailment as well as promote longevity.
Herbs and herbal remedies are not regulated by the FDA. One must be very diligent in the use of herbs as some may not be as advertised or conflict with prescription drugs. Being an old guy I take certain herbs for my Prostrate and Colin.