Stevia is an extraordinarily sweet herb... 40 -70 times sweeter than sugar. It has a slight licorice-like flavor that most of us with a sweet tooth, and most children love. For some people who only like the taste of real sugar it may take a little getting used to, but it has such important medicinal value that it is well worth learning to love.
It is a wonderful aid to weight loss and weight management because it contains no calories. In addition, research indicates that it significantly increases glucose tolerance and inhibits glucose absorption. People who ingest stevia daily often report a decrease in their desire for sweets and fatty foods. It may also improve digestion and gastrointestinal function, soothe upset stomachs, and help speed recovery from minor illnesses...
Stevia inhibits the growth of some bacteria and infectious organisms, including those that cause tooth decay and gum disease. Many individuals using stevia have reported a lower incidence of colds and flu. Many who have used stevia as a mouthwash have experienced a significant decrease in gum disease.
When topically applied, it softens the skin and smooths out wrinkles while healing various skin blemishes, acne, seborrhea, dermatitis, and eczema. When used on cuts and wounds, it promotes rapid healing without scarring.

Stevia is the sweetener of the future. Because the human body does not metabolize the sweet glycosides (they pass right through the normal elimination channels) 
A member of the chrysanthemum family (closely related to tarragon and chamomile and distantly related to lettuce, artichokes, safflower oil, and sunflower seeds and oil), it is totally safe and has been used for centuries by the Indians of South America where it grows wild.