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Relations (1)

related 2.32 — strongly supporting 4 facts

The follicular phase is defined by the regulation and activity of FSH, as FSH levels fluctuate throughout this phase [1], [2], and the hormone's production is specifically modulated by estrogen levels during this period [3], with its overall levels directly impacting the phase's outcomes [4].

Facts (4)

Sources

The Normal Menstrual Cycle and the Control of Ovulation - NCBI - NIH ncbi.nlm.nih.gov Feingold KR, Adler RA, Ahmed SF · National Center for Biotechnology Information 2 facts

claimReduced levels of FSH during the follicular phase can lead to a shortened luteal phase and the development of a smaller corpus luteum.

claimFSH levels are elevated during the early follicular phase and begin to decline until ovulation.

Female Reproductive System: Structure & Function my.clevelandclinic.org Cleveland Clinic 1 fact

claimAs estrogen levels rise during the follicular phase, the hormone acts as a switch to turn off the production of follicle-stimulating hormone (FSH), limiting the number of follicles that prepare eggs for release.

Follicular Phase Of Menstrual Cycle - Cleveland Clinic my.clevelandclinic.org Cleveland Clinic 1 fact

claimStarting in the late 30s, FSH levels may increase during the follicular phase while LH levels may fail to spike, potentially leading to the release of non-viable eggs.