What Is the Most Common Menstrual Cycle Length?
Menstrual cycle length means the whole cycle, including ovulation and menstruation. Sometimes people get this issue confused and think of the menstrual cycle as only the days when menstrual bleeding or the period occurs. Actually, these days are simply the beginning, and the cycle ends the day before the next menstrual bleeding begins. For many women menstrual cycle length is 28 days, but there is much normal variation. Some women have relatively short cycles, lasting less than the four weeks, and other women may have much longer cycles than can exceed a month in length. These are not abnormal and they represent the exceptional range in physical normality exhibited by the human female. There are clearly times when cycle length isn’t what would be viewed as normal. Less than a three week cycle may be abnormal and more than 40 days between periods could also be viewed with some concern.
