Individuals who was indeed more than 50 years dated had cycles you to varied because of the normally eleven

Over the 165,668 cycles we assessed, the average monthly period duration try 28.7 days. This might be in line with early in the day findings to the normal menstrual period duration various other populations nine–eleven .

I located cycle duration and variability differed more along the reproductive lifespan, out-of under 20 to above 50 years old. Individuals less than 20 years old had monthly period cycles 31.3 days long on mediocre, 1.6 weeks more than the newest 28.7-big date mediocre of these thirty-five so you’re able to 39 yrs old. People forty to help you 49 and you may forty five to help you forty two yrs . old had smaller cycles, averaging 28.dos and you may twenty eight.cuatro months, correspondingly. Those people more 50 years dated got stretched cycles, averaging 31.8 days.

I discovered that people’s period lengths varied from the an average of cuatro so you’re able to eleven weeks dependent on decades. Such as, for people under 20 years old, menstrual cycle lengths varied of the an average of 5.three days. Some one years thirty-five in order to 39 had the littlest variation, averaging step three.8 weeks. Leer más