(www.neomundo.com.ar/SINC) the levels of testosterone in men fall when they become parents, according to the results of an investigation of the University Northwestern’s Chicago.
The hormone downturn leads, according to the authors, that boys engaged in caring for hatchlings dependent.
“Our study shows that human parents are biologically prepared to help,” says Christopher w. Kuzawa, co-author of the study and associate professor of anthropology at the Weinberg College of Arts and Sciences. The researchers observed during four and a half years to a group of 624 men before and after being parents
The reason
scientists interpret that activities related to mating may come into conflict with the responsibilities of fatherhood and therefore that a recent father to take charge of his offspring it is advantageous to reduce the production of testosteronean incentive of sexual competition.
To come up with these findings, the researchers observed during four and a half years to a group of 624 men of the Philippines between 21.5 and 26 years of age before and after being parents, in order to determine whether their hormone levels changed after the paternity.
Results indicate, even parents to experience a decrease in testosterone passing and very intense when they take home for the first time a newborn. “The requirements of having a baby require many emotional, psychological and physical settings,” says Lee Gettler, another co-author of the study. “The biology of a man can change substantially to help meet these demands,” he added. In addition, the decline is more evident especially involved with the care child parenting
In previous similar studies, the number of surveyed men was not sufficiently representative. In addition always left doubt about whether the men were losing testosterone to become parents, or if males with less amount of this hormone were the most given to paternity. The novelty of the approach has been the monitoring of a large group of men before and after the paternity
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