Mushrooms are a good source of the B vitamins - niacin, riboflavin, thiamin, folate, vitamin B6, biotin and pantothenic acid. These vitamins are lost when vegetables are cooked in boiling water.
Niacin helps to control the release of energy from protein, fat and carbohydrate. Riboflavin is also essential for the breakdown of carbohydrate, fat and protein into energy. It is also needed for healthy skin and mucous membranes, especially those in the cornea. Thiamin controls the release of energy from carbohydrate, needed for the normal functioning of the brain and nervous system. Folate is essential for the formation of red and white blood cells in bone marrow. B6 is essential for breaking down protein for use in building new body tissue. Biotin is necessary for the release of energy from fat.
Collectively, these B vitamins in mushrooms may help to relieve stress, depression and fatigue.
Mushrooms are also one of the few dietary sources of Vitamin D - for strong healthy hair, skin and nails.
Mushrooms are a good source of the minerals potassium, selenium, copper and phosphorus. Mushrooms contain more potassium than most other vegetables and fruits. This mineral can have a positive effect in lowering blood pressure. Selenium has anti-oxidant properties, rendering harmful free radicals safe and is therefore implicated as an anti-cancer agent. Copper is a vital mineral required to make collagen. Lack of copper is linked with osteoporosis and heart disease. Phosphorus is the companion nutrient to calcium.
Mushrooms are a good source of easily absorbed, high quality vegetable protein, containing more than most other vegetables.