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Plant extracts that act in the body like weak estrogens.
Synonym(s): phyto-oestrogens.


Compounds found in plants that can mimic the effects of estrogen in the body.
Mentioned in: Premenstrual Syndrome

phytoestrogens, plant-derived estrogen analogs.


substances with activity as estrogens produced in plants. Includes isoflavones and coumestans. Most of these agents undergo major changes in the rumen, the agents becoming much more potent as a result of the change, e.g. formononetin, which has very little activity is converted to a potent estrogen.
References in periodicals archive ?
Thus far, soy-derived phytoestrogens have received prevalent usage because of their benefits in decreasing age-related diseases (e.
Further studies, possibly long-term and with large cohort are needed to provide definitive answers to the efficacy of phytoestrogens and especially genistein as a possible alternative to pharmacological treatments of menopause and related diseases.
European researchers have established a database on phytoestrogens within European diets.
Phytoestrogens achieved notoriety in the 1940s in Western Australia when sheep fed large quantities of subterranean clover fodder developed a reproductive abnormality called clover disease, which resulted in substantial losses in productivity--phytoestrogens in the clover were subsequently identified as the bioactive factor responsible for the reproductive abnormality.
Palomares and her coinvestigators launched the University of Washington/Seattle Cancer Care Alliance Phytoestrogen Trial.
Foods with phytoestrogens - chemicals that mimic the body's own hormone, oestrogen - are vital because natural oestrogen levels begin to decline from the moment the menopause begins.
The available evidence suggests that phytoestrogens available as soy foods, soy extracts, and red clover extracts do not improve hot flushes or other menopausal symptoms," conclude Minnesota's Erin Krebs and colleagues.
The estrogen-mimicking activity of phytoestrogens might, in theory, reduce hot flashes and other problems that occur during menopause--a time of falling estrogen levels.
A EUROPEAN Union (EU) network of research institutions investigating the safety and health effects of phytoestrogens has been created by the European Commission; called Phytohealth, it will especially check whether phytoestrogens prevent cancer.
Part I Bone and oral health: Diet and the control of osteoporosis; Phytoestrogens and the control of osteoporosis; Vitamin D fortification and bone health; Calcium citrate (TCC) and bone health; Diet, functional foods and oral health; Sweeteners and dental health.
Soya products are a rich source of isoflavones, a major group of phytoestrogens which act like oestrogen in the body.
Data from four randomized, controlled trials on phytoestrogens suggest that soy isoflavones may affect verbal memory (immediate recall of a story) and executive function (ability to plan).