A member asked:

What causes cycle length to shorten? my periods used to come every 30 to 40 days but starting from march this year, they come every 20 to 25 days.

A doctor has provided 1 answer
Dr. Matt Wachsman answered

Specializes in Internal Medicine

Still average: There is always some variability in the period with aging away from puberty. Changes in weight, hormones, birthcontrol always change the period. This might be helpful a bit http://www.nerdpocalypse.net/diseases/female.html

Answered 9/29/2014

3.7k views

Thank

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