title: Do lunar phases influence menstruation? A year-long retrospective study.
abstract: We assessed with cross-approximate entropy menstruation onset versus moon phases in 74 women with 980 menstrual cycles over a calendar year. In defiance of traditional beliefs and contrary to what some researchers have argued with short-term research work, in this long-term study we did not find any synchrony of lunar phases with the menstrual cycle.
authors.forename: I
authors.initials: I
authors.lastname: Ilias
authors.forename: F
authors.initials: F
authors.lastname: Spanoudi
authors.forename: E
authors.initials: E
authors.lastname: Koukkou
authors.forename: D A
authors.initials: DA
authors.lastname: Adamopoulos
authors.forename: S C
authors.initials: SC
authors.lastname: Nikopoulou
mesh_terms: D000293:Adolescent; D000328:Adult; D003430:Cross-Sectional Studies; D005260:Female; D006115:Greece; D006801:Humans; D008598:Menstruation / Q000502:physiology* / Q000523:psychology; D016081:Moon; D010507:Periodicity; D012189:Retrospective Studies; D013997:Time Factors; D055815:Young Adult
keywords: menstruation, moon cycles.