Distribution of the follicular and luteal phase lengths and their age-dependent changes in Japanese women: A large population study.
Sawa MitakeOsamu Hiraike-WadaKosuke KashiwabaraAkari NakamuraRisa NasuMaaya HineYutaka MatsuyamaTomoyuki FujiiYutaka OsugaPublished in: Reproductive medicine and biology (2023)
The shortening of the follicular phase in women aged 40-49 years implied a relationship with the rapid decline of ovarian reserve in these women, and the age 35 years old was turning point of ovulatory function.