The following is some info I've collected...

"Ganoderma mushroom is from the Mycetes kingdom. Because of the increasing worldwide popularity of Ganoderma mushroom as medicinal herb, this fungus is now mass produced with scientific cultivation method.
The mushroom family can improve immune system by activating Macrophage and Natural Killer (NK) immunity cells. Macrophage is one of our important first line defense against virus, bacteria and foreign substances. Some can even improve allergic conditions.

All of these fungi can prevent high blood pressure, diabetes, hardening of blood vessel and even cancer. But out of all the fungi, Ganoderma Lucidum significantly stands out in its medicinal values.

Ganoderma Lucidum contains beta glucan for anti-cancer, it also contains Organic Germanium which is a precious mineral and has been proven to have strong anti-cancer effec.

Ganoderma Lucidum also contains Triterpenes to help cleanse our blood vessels from cholesterol and fatty substances.

Ganoderma mushroom even has Superoxide Dismutase (SOD). This enzyme functions as our primary defence line against free radicals in our body. SOD in Ganoderma Lucidum can help to protect against attack from harmful free radicals. This makes Ganoderma mushroom one of the best defense for anti-aging.

In a Chinese medical encyclopedia "Ben Cao Gang Mu" (Materia Medica - Detailed Outline of Medicinal Herb), an ancient medical practitioner Lee Shi Zhen in the Ming Dynasty classified Ganoderma Lucidum as a "superior herb".

He grouped Ganoderma mushroom into six categories by its color and form, namely Green, Purple, Red, Yellow, White and Black Ganoderma. All six types have its own medicinal values and healing effects.

According to the record, "continuous consumption of Ganoderma mushroom makes the body light and young, lengthening life and making one like an immortal who never dies".

Later, modern medical researches on Ganoderma Lucidum proved the findings of those ancient medical texts. That is why for over 2000 years, Ganoderma mushroom is highly praised in China. The Chinese calls it the auspicious herb, which also influenced their literacy and arts."