Agaricus is traditionally known as "God's Mushroom" because of its near miraculous curative benefits to a wide range of disorders. Researchers have found the Agaricus polysaccharide fraction to have significant immune activating power. The Agaricus mushroom has also been shown to have potent chemo preventive activity.

Since Agaricus is a gentle, edible mushroom that has no side effects, it is consumed as a food and as a tonic herb. Used in cosmetic formulations for its skin-whitening and anti-ageing properties. topical Agaricus blazei Murill is said to aid in skin repair; stimulate skin cells, assist collagen production and build up the immune resistance of the skin. The Agaricus mushroom contains ample amounts of glucagons, a plant textile, that absorbs carcinogenic substances and assists in eliminating them from the body. It is a natural anti-oxidant. 

"Agaricus" being recognized as an alternative treatment support for many diseases including Cancer. And also "Agaricus" is known as a health supplement boosting the immune system to avoid getting sick.
"Agaricus" finally got huge attention and became famous in 1990's, even though it was discovered in 1960's, in Brazil, and has been used locally as a health supplement for long time.
It is originated in Piedate region, a suburb of Sao Paulo in Brazil, where known to have a low rate of modern diseases including cancer.

"Agaricus" was firstly spotlighted when Dr. W.J. Sinden from University of Pennsylvania (USA) and Dr. E.D. Lambert from Lambert Laboratory (USA) presented their reports on the mushroom in 1965.
Also in Japan, following research by Dr. Tetsuro Ikegami from National Cancer Center (Japan) and Dr. Shoji Shibata from Department of Pharmacy of Tokyo University (Japan), Dr. Chiba from National Cancer Center presented his research at Japan Cancer Center.
In this report, it was proved that polysaccharide of "Agaricus" activates interferon production (induce effect), and has strong power to prevent virus invasion.
Since then, many researches of "Agaricus" have been done, and discoveries have been reported.
Especially in Japan, "Agaricus" is the one of the most commonly known health food in past few years.

Unfortunately, there are so many kinds of "Agaricus" products on the market now, and it's hard to find a quality