Premenstrual symptoms interference and equol production status in Japanese collegiate athletes: A cross‐sectional study

Takashi Takeda,T. Ueno,Shigeto Uchiyama,M. Shiina

Published 2017 in The journal of obstetrics and gynaecology research

ABSTRACT

Consumption of soy isoflavones reduces the risk of estrogen‐related diseases, such as menopausal symptoms, osteoporosis, and cardiovascular disease. Equol is metabolized from the isoflavone daidzein by intestinal bacteria and has higher bioavailability than other isoflavones. Equol producers are believed to benefit from soybean consumption to a greater extent than non‐producers. Recently, we showed that equol non‐producers were at significant risk of premenstrual syndrome (PMS). Previously, we reported that PMS is a common menstrual problem in female athletes, and almost half of the studied athletes felt a negative effect of premenstrual symptoms on their athletic performance. This study was conducted to evaluate the relation between PMS and equol production status in Japanese collegiate athletes.

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