Does the rule synchronize among women? This is the scientific explanation

Since the beginning of time it has been wanted to give a religious or mystical meaning to menstruation. This physiological phenomenon, which is related to the stages of women's life and fertility, is present in all mythologies, each with its consequent explanation of the period.

One of the curiosities that you have probably heard more times is that the rule can be synchronized. From groups of friends to coworkers they say they menstruate on the same days. Also, the popular ideology has assumed that the phases of the moon affect the female cycle. In fact, there are even studies that defend these theories but, in reality, they are wrong.

The most widespread myth is that if a group of women live together they will end up synchronizing their rules. In fact, there are studies that support this theory, such as the one published in the scientific journal 'Human Nature'. Although this It's a little weird, As it explains J.M. Mulet, researcher and professor of Biotechnology at the Polytechnic University of Valencia, in his book 'What is healthy life?'.

If this synchronization occurs in this way, this it would imply that the cycle would be subject to the influence of pheromones, as in some animals where there is a social organization in which there is a dominant female. However, this pheromone emited by a dominant woman It has not been found in the human species, nor the receptors that would be necessary, according to the Spanish researcher.

It would imply that the cycle would be subject to the influence of pheromones and the existence of a dominant woman, something that has not been proven

In fact when the studies were reviewed, who claimed to have found evidence of this synchronization, it was noted that everyone had made mistakes methodological and that the results could be explained by pure chance, as evidenced by the research of the professor at the University of California Jeffrey C. Schank.

In the event that at some point you have noticed that your menstruation has been able to synchronize with that of your roommates, family or friends Mulet recommends that you remember and think if that happened always and with all, or only occasionally and with some, "because you may be having a memory selection bias", as the book picks up.

The moon does not affect either

Another of the menstruation myths that the Valencian researcher gathers in his book is the one related to the phases of the moon. It is true that this satellite has great geological and planetary importance for us, since its position controls the ways and stabilizes the rotation of the Earth. Therefore, it is likely that without it there was no life on our planet.

But despite its influence, like the one it has on the tides, Is it possible that the menstrual cycle depends on the moon? First, if the rule goes down depends on the satellite light, women who live in cities would not spend a penny on feminine hygiene products, since the light that would reach the urban areas would be low due to light pollution, and if it were cloudy, then less. Therefore, Mulet notes that we must rule out the light.

The attraction of the Earth, with more mass than the Moon and closer, is the dominant one and makes the influence of the Moon irrelevant

Could it be an effect of gravity? Although it affects the tides, the influence of the Moon on the mass of the endometrium is irrelevant if we tell that the woman has her feet on the ground. This makes the attraction of the Earth, which has much more mass than the Moon and is much closer, to be dominant and make the influence of the Moon irrelevant. The best evidence that does not influence is that when a woman has the rule, it is directed towards the ground and does not rise towards the Moon, since the only gravitational attraction that affects us is that of the Earth.

And if this explanation has not helped you, the biotechnologist simply recommends that take the test. Look at the date you menstruate and in the phase of the Moon for five months. The lunar month is 29.53 days and the menstrual cycle varies (between 25 and 35 days), in a very regular person it will be 28 days. That is, one day less. That means that the lunar and menstrual cycles will not coincide, since the rule will be advanced day and a half every month, so if a woman has her period on a full moon, in a year she will have it again.