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Becoming a new father – The Transition to Fatherhood

What’s the most fascinating, new area of fatherhood research? For a research nerd like me, it’s the biological connection between dads and their children. I’m not talking about the DNA dads contribute to their offspring.

Posted by National Fatherhood Initiative

Apr 11, 2023

What’s the most fascinating, new area of fatherhood research?

For a research nerd like me, it’s the biological connection between dads and their children. I’m not talking about the DNA dads contribute to their offspring. I’m talking about the changes that take place in dads’ biology during the prenatal and postnatal periods that prepare them for the most vital role of their life.

That’s why I was so pleased to run across the best, concise summary I’ve seen of this burgeoning and exciting area of research. The article below appeared in the Child and Family Blog, a recent addition to our Free Learning Center for its outstanding collection of fatherhood-related research. You’ll enjoy reading it.

For more research on the biological connection between fathers and their children, order Father Facts. It contains an entire chapter of studies examining this connection. I also encourage you to order our New and Expectant Dads and Father Involvement Starter bundles to build this connection in the dads you serve. In building this connection, you’ll increase the chance that dads will stay involved in their children’s lives for the long haul!

Christopher A. Brown, president, National Fatherhood Initiative®

This article is written by Marian J. Bakermans-Kranenburg and Marinus H. van IJzendoorn for the Child & Family Blog. It is republished here with permission.

Becoming a new father – The transition to fatherhood

Babies are ready to meet their fathers, and fathers’ hormones and brains are ready to adapt to this new phase of life.

Key takeaways for caregivers

  • The transition to fatherhood is accompanied by changes in fathers’ brains and hormones. These changes are probably related to new activities and routines that fathers are involved in and develop.
  • These brain-related and hormonal changes are functional: They support fathers’ sensitive responses to their infants’ needs.
  • A new study using ultrasound imaging and feedback during pregnancy indicates that positive father-child interactions can get a head start before birth.

The birth of a child is the birth of a father

The birth of the first child marks the transition to fatherhood in men’s lives. This is a developmental milestone, a new phase in adult life with unfamiliar tasks and responsibilities. The transition is more striking for most men who become fathers now than it was for their fathers and grandfathers.

Today, fathers in Western, industrialized countries are much more actively involved in child care than their fathers were: a three- to six-fold increase in time over what their own fathers typically did. How are men prepared for the life-changing event of becoming a father?

Hormonal changes in new fathers

The changes in hormonal levels in women who go through pregnancy and give birth are unparalleled. These are necessary for housing and feeding a new human being. In the transition to fatherhood, men also undergo hormonal changes, although they are not as significant as those women experience.

From around four weeks before the birth of their first child to around five weeks after birth, men’s testosterone, vasopressin, and cortisol levels decrease, and their oxytocin levels slightly increase. These hormones are involved in many activities.

Testosterone is relevant when we are daring and competitive, vasopressin makes us alert, cortisol helps us respond to unexpected situations and is high when we are under stress, and oxytocin is well known as the love hormone but has more functions: It helps us recognize social signals, such as others’ emotions. These hormonal changes in fathers can be considered as functional for gentle interaction with and sensitive care for the baby.

The perinatal period

But it could also be the other way around: In the perinatal period, the new activities and routines of fathers may lead to changes in their hormone levels, which in turn support sensitive parenting.

For example, when fathers spend a few evenings a week on the couch cuddling with their baby rather than playing football, their cortisol levels probably decline and their oxytocin levels probably rise. This, in turn, may make them more patient when the baby protests during diaper changes. This idea of caregiving routines leading to change in hormonal levels is supported by new research on fathers’ brains.

Do men’s brains change when they become fathers?

There are (at least) three different ways to study human brains to measure change:

  1. Brain structures
  2. Activity of brain areas
  3. Brain networks

1. Brain structures

The first is to look at brain structures, which can be seen as the hardware of the brain. Two studies found some change in fathers’ brain structures in the first months after the birth of the baby (Kim at al., 2014; Martínez-García et al., 2022), but another study did not find such changes (Hoekzema et al., 2016).

2. Activity of brain areas

The second way to study brains is to look at the activity of brain areas in response to child-related stimuli. Much of this research focuses on the sounds of infants crying because that is such an intense and meaningful sound. In their first period of life, it is the only way babies can attract their parents’ attention when they need something.

Indeed, many brain regions are activated when we hear crying sounds. But having children does make a difference: Adults without children show more activity in brain regions involved with cognitive processing when they hear infants crying, while adults with children show more emotional processing (Witteman et al., 2019).

3. Brain networks

While this second type of brain research focuses on separate brain regions, the third type of brain research looks at brain networks. For example, the parental brain network is a system of regions that are supposed to collaboratively support caregiving behavior.

New research shows no differences in this network between fathers during pregnancy and new fathers with a first-born baby of about 2 months, but a remarkable finding for fathers in the postnatal period emerged: The more fathers were involved in their children’s care, the stronger the connectivity in their parental brain network (Horstman et al., 2021). In other words, it does not matter whether or not men have a baby, but it matters how much caretaking they do.

Play helps fathers connect with their babies

Fathers and mothers are both similar and different in the ways they engage with their children. In general, mothers do the lion’s share of caregiving, such as feeding and bathing. When it comes to play, fathers and mothers are more similar in the amount of time they play or read stories with their child. This implies that when fathers and infants interact, it is often in the context of play (Amodia-Bidakowska et al., 2020).

Play is a perfect way for fathers to get to know their child, and to see what they like, what fears they may have, and how they overcome these fears with daddy’s help. This is as rewarding for fathers as it is for children, and it stimulates the attachment relationship (Monteiro et al., 2010).

Positive parenting in fathers starts with prenatal care

We stated earlier that the birth of a child is the birth of a father. Actually, being a parent starts before the birth of the child. Fathers are influential during pregnancy – they affect prenatal development through their own health, and they influence expectant mothers’ mental and physical health.

New research also shows that unborn babies are ready to interact with their fathers. Using ultrasound, we recorded how babies between the 21st and 32nd week of pregnancy responded when their fathers softly massaged mothers’ abdomen, read from a children’s book, or sang for their child (De Waal et al., 2022).

Babies can hear voices coming from outside the abdomen and can recognize their father’s voice. They can remember rhythms and music during pregnancy and even after birth when they heard them regularly during pregnancy. As pregnancy progresses, the skin of mothers’ abdomen thins, there is less amniotic fluid, and the babies’ nervous system develops, enabling them to feel and respond to touch.

In our research, we offered fathers three sessions with ultrasound-based interaction with their unborn baby. We saw on the screen how the babies responded when their fathers read to them from a children’s book or sang a lullaby. We used video-feedback reviewing of the ultrasound images to help them interpret their babies’ states, responses to the interaction (e.g., thumb sucking when dad read), and own initiatives (e.g., pushing against the wall of mother’s womb).

Fathers who received such prenatal video feedback were more sensitive during play with their babies after birth (Buisman et al., 2022). The video feedback may have made these dads more attuned to their babies, and may have spurred them to habitually check their baby’s face and other signals to adapt their own behavior or pace to the infant’s needs.

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