Does menstruation synchronize after spending a lot of time together?

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Have you ever had the period at the same time as your sisters or friends? It is a rare thing, but that happens frequently when we live with women.In Science Daily Online we tell you if there really is a synchronization, produced by a mechanism of our body.

Is menstruation synchronized after spending a lot of time together?

The first time the subject was discussed was in 1971 , when Nature published a study of 135 university students from the United States The research was done by a medical student named Martha MacClintock , who convinced the 135 women in the residence who shared to participate.It was a couple of years later when the magazine published its results, which also I mean being the first scientific evidence of pheromone communication between human beings.

Does menstruation synchronize after spending a lot of time together?

MacClintock if He was interested in investigating this when invited to a scientific meeting , where most were men, and they would discuss pheromones in mice.During the experiment they realized that some mice were ovulating at the same time when they were in the same cage.This discovery aroused the curiosity of Martha MacClintock and became the first to give data on whether menstruation is synchronized.

It is much more likely to have synchronized menstruation with women with whom you have more contact In principle it does not happen, but after a short time of living together.In addition, is not always the same day that the menstrual cycle begins, it can vary on the start date .

More studies

After the study of the “social synchronization of ovulation” many more have been done to women who share a room, lesbian couples, workmates and even in animals like baboons, rats and chimpanzees ces.One of the arguments is that they synchronize to be more sexually receptive.That is, improve the possibility of reproduction in women.

Does menstruation synchronize after spending a lot of time together?

Although it had already been studied once, in 1998 MacClintock together with Kathleen Stern, decided to undertake another investigation to demonstrate how pheromones and sweat are related .Why sweat? Because body odors can be detected in the environment, some people in greater measures than others.

This experiment reaffirms that the pheromones of women who live together, communicated more with each other .So much so that the menstrual calendar of each one could be adjusted to match them.Martha MacClintock managed to check again what he had already raised and, in addition , showed that humans also have pheromones that play a fundamental role in our life and not just something of animals or plants.

Questions about the results

Although in the first At the time such discoveries were taken for granted, over time new research has been carried out and the results about the MacClintock effect have been very different, both in human groups and from other species.Most positive conclusions about the effect but they are at even with the negatives.

At the moment, it cannot be said with absolute certainty that there is the MacClintock effect , but perhaps it is a coincidence that could have more to do with a coincidence of the level of stress, the type of life and food among a group of people, than with a biological mechanism.In any case, we will have to wait for new research before it becomes a myth.

Have you had the MacClintock effect? What is your opinion: body mechanism or simple chance?

If you have been interested in this article, you may want to know the taboo of menstruation in Papua New Guinea.

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