Age during the first period of the woman related to the age at which her son begins puberty – study

New European research has shown that the age at which a woman starts her period seems to be related to the age at which her son will start puberty.

Conducted by researchers from the University of Aarhus, Denmark, the study, published in the journal Human Reproduction, is the largest to date. It aims to study the link between the first period of a mother and the beginning of puberty in sons and daughters.

Although previous studies have shown that the age at which women experience their first period is largely inherited from mother to daughter, it has not yet been established a clear link with the link that may exist with the time of the puberty in boys.

For the new study, researchers examined 15,822 children born between 2000 and 2003 and followed them until 2016. From age 11, children had to complete a questionnaire every six months, which included questions about puberty, while mothers at the age where they had their first menstrual bleeding.

The results showed that the first women had their first period, the sooner their sons started puberty, and later they had their first period, later their sons began puberty.

In accordance with previous studies, the same association was also found for girls.

"We found that mothers who had their first rules bled earlier than their peers had sons with signs of puberty beginning earlier than their peers," commented one of the authors of the study, Dr. Nis Brix.

"The most important difference was the beginning of armpit hair growth, which started on average about two and a half months earlier. their voice broke nearly two months ago, the acne began to develop nearly two months earlier and their first sperm ejaculation took place nearly a month and a half more early, "added the doctor. "If their mothers started puberty later than their peers, then the sons experienced first ejaculation, underarm hair growth, and development of acne later than their peers."

In the last 100 years, the onset of puberty began earlier, probably due to improved health and standard of living. However, a younger age at puberty has also been associated with an increased risk of illnesses later in life, such as breast and testicular cancer, diabetes, and cardiovascular disease. JB

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