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Mycoestrogens are estrogens produced by fungi. The most important mycoestrogen is zearalenone, produced by Fusarium species of fungi. Zearalenone is the main phyto-oestrogen consumed in the USA.[1] It may be one dietary factor that can reduce the prevalence of breast cancer.[2]

In Food[edit]

Mycoestrogens are commonly found in stored grain. They can come from fungi growing on the grain as it grows, or after harvest during storage. Mycoestrogens can be found in silage. [3]


  1. ^ Kuiper-Goodman T (July 1990). "Uncertainties in the risk assessment of three mycotoxins: aflatoxin, ochratoxin, and zearalenone". Canadian Journal of Physiology and Pharmacology 68 (7): 1017–24. doi:10.1139/y90-155. PMID 2143430. 
  2. ^ Hilakivi-Clarke L, Onojafe I, Raygada M, Cho E, Skaar T, Russo I, Clarke R (August 1999). "Prepubertal exposure to zearalenone or genistein reduces mammary tumorigenesis". British Journal of Cancer 80 (11): 1682–8. doi:10.1038/sj.bjc.6690584. PMC 2363126. PMID 10468283. 
  3. ^ González Pereyra ML, Alonso VA, Sager R, Morlaco MB, Magnoli CE, Astoreca AL, Rosa CA, Chiacchiera SM, Dalcero AM, Cavaglieri LR (April 2008). "Fungi and selected mycotoxins from pre- and postfermented corn silage". Journal of Applied Microbiology 104 (4): 1034–41. doi:10.1111/j.1365-2672.2007.03634.x. PMID 18005347.