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Mushrooms Exposed To Sunlight Are A Good Source Of Vitamin D

April 22, 2013: 12:00 AM EST
A U.S. study that compared vitamin D levels in 30 adults after ingesting supplements and mushroom powder found no statistical difference among the sources. Vitamin D is necessary  for bone health and muscle strength, reducing the risk of fracture, osteomalacia, osteoarthritis and osteoporosis. Participants took capsules containing 2,000 IU of vitamin D2 or vitamin D3, or mushroom powder containing vitamin D2. The researchers noted, however, that the powders were made from mushrooms that had been exposed to sunlight or ultraviolet light. The researchers also found that mushrooms make vitamin D2 through a process similar to what occurs in human skin after sun exposure. Mushrooms not only produce vitamin D2, but can produce vitamin D3 and vitamin D4.
Holick et al., "Mushrooms Can Provide as Much Vitamin D as Supplements", News release, presentation at the American Society for Biochemistry and Microbiology annual meeting, April 22, 2013, © Holick et al.
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