Out of more than 100,000 species of fungi, over a dozen types have been used in China for more than 3,000 years to increase immunity, strengthen the lungs and other organs, and as a vital part of cancer therapy.There’s significant research to suggest that the following mushrooms can play a vital role in the treatment of many disorders:Shiitake:Shiitakes contain a lentinan, a compound that’s been shown to reduce tumors. Lentinan is currently under investigation as a potential cancer-fighting drug. Studies are indicating, that there are substances in shiitakes other than lentinan that fight cancer, which is why using the whole mushroom may be preferable. Shiitakes have been used for an overgrowth of Candida albicans, bronchial inflammation including asthma, environmental allergies, and recurring colds and flu. Reishi:Reishi mushrooms strengthen the immune system by increasing white blood cells tumor-fighting cells. They help the lungs in particular by regenerating lung tissue.They’re may also be good for people with adrenal exhaustion and anxiety.Cordyceps:Cordyceps appear to be a lung and kidney tonic. They help relax smooth muscles, making them the nutrient of choice for people with asthma and respiratory problems. Like other medicinal mushrooms, Cordyceps has been used with some success as an anti-cancer agent.