Carried out by researchers at Aarhus University, Denmark, the study, published in the journal Human Reproduction, is the largest one to investigate the association between a mother's first period and the age puberty starts in both sons and daughters.
For the new study, the researchers looked at 1
The findings that the older women had their first period, the earlier their sons started puberty, and the later they had their first period, the later their sons started puberty
"We found the mothers who reported their first menstrual bleed earlier than their peers had sons with signs of puberty earlier than their peers." "Commented one of the study authors, dr. Nis Brix.
"The biggest difference was when hair started growing in the armpit, which started, on average, about two and a half months earlier; their voices broke nearly two months earlier, and the first half of the story went on, "the doctor added.
Over the past 100 years the timing of puberty has gradually started earlier, probably due to better health and living standards. However, a younger age at puberty has been linked to increased risk of disease later in life, such as breast and testicular cancer, diabetes and cardiovascular disease. JB
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