Curious scientific facts about the relationship between parents and children 2026

The relationship between parents and children has always given rise to many studies and debate. We are not only talking about the genetic inheritance that children receive from their father figure, we are also referring to the bond, the way of relating between parents and children. Science has revealed some curiosities about parents. We tell you the most striking ones.

Parents sleeping with their children

A study carried out by researchers at the University of Notre Dame (France) and published in the journal PLOS One shows that fathers who sleep close to their children have lower testosterone levels than fathers who sleep away from them. This phenomenon has an explanation and not only that, but also a function: according to the authors of the study, the objective of this decrease is for men to be more receptive and more willing to meet the requirements of their children. According to experts, male biology changes to meet the demands of a newborn.

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Physical resemblance creates bond

Another finding that science revealed a few years ago is that physical resemblance has a strong power over paternal instinct. Specifically, a study released by the French National Scientific Research Center (CNRS) and carried out by the University of Montpellier (later published in the magazine Animal Behavior) concluded that men take more care of children who have a physical resemblance to them.

This argument was something that Darwin already supported in his theory of evolution and that current science has confirmed through a study carried out in real families in Senegal: 30 families with two children each in several towns in Senegal, where scientists applied a methodology to quantify both the dedication of the parents to their children and the similarity between them. The conclusion was clear: parents' dedication to their children was greater when there was a physical resemblance. And not just the similarity: the same effect was also produced if father and son had a similar smell.

Paternal obesity affects the health of the child

Obesity is a health problem that can have serious consequences and, according to science, not only for the person who suffers from it. If a parent is obese, the child is at greater risk of developing diseases in the future such as colon cancer and, in the case of women, ovarian cancer. This is what a study carried out by Duke University (USA) that was published in the journal BMC Medicine demonstrated. According to its authors, "paternal obesity can alter a genetic mechanism that will be present in the next generation. It is important that we are aware that the Western lifestyle may be leaving a trace on future generations."

Happy childhood moments

We all know that looking back and remembering happy childhood moments with our parents is one of the most emotional and satisfying things there is, but not only that: those memories can also be great allies to have tools to manage stress in our adult lives.

Research conducted at California State University brought to light that sons who have happy memories of their parents have greater emotional stability, which makes them better able to deal with stress and better resolve these situations compared to men who do not have a good relationship with their parents.

"The main message is that if there is a father present in a child's life, the father should know how important he is," said Melanie Mallers, one of the study's lead authors.

Father's money calls son's money

We already know that the power that parents exercise over their children is very great and can also have an impact on the child's future finances. We are not talking about inheritances, nor about the child benefiting financially from the father's good standard of living, which is true in many cases, we are referring to the fact that, according to science, the father's money can call the son's money. A study published in the Journal of Political Economy maintains that children inherit from their parents cognitive factors such as intelligence, work values ​​or the spirit of sacrifice and improvement, qualities that can make children of parents with a good purchasing power also have a greater than average economic capacity.

However, there are other studies that suggest some different causes for this: research by economists at the University of Texas at Austin, University College Dublin, and Lund University in Sweden found that children raised in wealthy families owe their future financial success to the home they grew up in rather than any abilities they may possess.