Like other edible mushrooms they contain the B complex vitamins, vitamin D and essential amino acids, but the morel mushrooms have an uncommon amino acid in them cis-3-amino-l-proline. The polysaccharides they contain have several medical properties including antiviral, immunoregulatory, anti-tumour growth effects and they give you more resistance to fatigue. Extracts from the polysaccharides have antioxidant effects and these morels can help prevent heart disease and colorectal cancer as well as having numerous other benefits. They are rich in the minerals potassium, zinc and iron and contain relatively high proportions of selenium which prevents free radical formations. These mushrooms potentially lower the risks of breast and prostate cancer too.