Ever spent a few days with your bestie and started your period at suspiciously similar times?
You share your tampon supply and agree that you’re periods must have synced up.
But does anyone really know what this is based on?
According toHealthline, scientists first began investigating menstrual syncing with a 1971 study published byHarvard.
Since this point, Healthline reports that menstrual syncing has been referred to as “the McClintock effect.”
However, the source also writes that the study failed to consider various essential factors.
Since this preliminary study, little evidence has supported its validity, and multiple studies have countered its conclusions.
The results showed that their menstrual phases did not synchronize.
Despite all of this, you are not by any means alone for having believed this myth.
Where did period syncing come from in the first place?
The old wives' tale about menstrual syncing is a fairly common misconception.
If you swear by having experienced this as well, we believe you.
Two women differ in their menstrual start date by seven days on average.
