Past, Present and Future

[Jester]

As for menstrual cycles correlating. I agree with Meat, and I've experienced it in situations where many females live together. Also, the situations I've seen the cycles remained synchronized and did not get out of phase, ever. It does happen, but I believe it has a natural explanation. Again, from a biologic perspective, it would make sense for a tribe to have this risky time synchronized rather than be lion bait all the time. More recent studies have found synchrony correlations when factors such as olfactory sensitivity and hygiene are included. That makes sense.

The existence of Menstrual Synchrony is debated, as are most aspects of it. I fall on the side of it being a result of methodological biases, rather than an actual phenomenon. However, there is obviously a reasonable debate (apparently mostly from the 1998-2002 era) about it, and I can only speculate who's right and who's wrong.

However, in any case, it has no paranormal aspect, and our lack of understanding about it is simply a case of insufficient study, not any particularly mysterious phenomenon.

I will point out that the study failed to demonstrate any correlation with smell, although they did apparently find a correlation with hygene. Whether this is a real effect, or some artefact of the data, I have no idea.

-Jester