The focus of preparation for parenthood is usually, understandably, on the person who is pregnant and giving birth. The partner's experience is acknowledged but rarely examined in depth – and this can leave fathers and non-birthing partners inadequately prepared for a transition that is substantially more psychological than they expected.
Becoming a father changes how a man understands himself, his relationships, his priorities, and his body's own chemistry. The change is real and documented, and it happens whether or not it's acknowledged. Knowing what to expect – including the parts that aren't in the antenatal classes – makes the transition less disorienting.
Healthbooq (healthbooq.com/apps/healthbooq-kids) covers the emotional transition to parenthood and parental wellbeing.
The Biology of Becoming a Father
It is less widely known than it should be that men undergo significant hormonal changes during the perinatal period. Research by Lee Gettler at the University of Notre Dame, using longitudinal data from the Philippines, documented that testosterone levels drop substantially in new fathers in the first weeks after birth – and that the drop is larger in fathers who are more involved in hands-on care. Lower testosterone in new fathers is associated with greater investment in caregiving; it is a biological preparation for nurturing, not a deficiency.
Prolactin (the hormone associated with breastfeeding and milk production in mothers) also rises in expectant and new fathers, though to a much lesser extent than in mothers. Oxytocin – the bonding hormone – rises in new fathers in response to physical contact with the baby: holding, skin contact, play.
The biological architecture of paternal bonding is different from maternal bonding in important ways. It is typically more contingent on physical contact and hands-on caregiving, less automatic immediately after birth. This is one reason why paternal bonding sometimes takes longer – not because men are less capable or interested, but because the biology responds to different triggers.
The Identity Shift
Psychologists who study fatherhood have described the transition using the concept of "generativity" (from Erik Erikson's theory of psychosocial development): the shift toward a sense of responsibility for the next generation that accompanies becoming a parent. For many men, this shift is experienced as a fundamental change in what they feel responsible for and motivated by.
Research by Oliva-Zarate and colleagues in Spain, and by Seng-Schwab and teams in North America, has documented that the identity shift for new fathers is significant but less socially scripted than for new mothers. Society has clearer narratives about what "mother" means; "father" has more varied cultural meanings and less clear role definition, which can leave men feeling less certain about what they are supposed to be doing.
A common experience is feeling peripheral in the early weeks – when breastfeeding is established, when the mother is the primary caregiver, when the baby seems primarily interested in the person who is feeding them. This is normal and usually changes as the baby becomes more interactive and as the father develops his own caregiving repertoire. But it is worth naming that feeling peripheral is a common feature of early fatherhood, not evidence of doing it wrong.
Paternal Bonding
The expectation that fathers will feel an overwhelming rush of love at birth is one that leaves many men quietly concerned: if that's what's supposed to happen and it isn't happening for me, what does that say about me? In reality, immediate overwhelming bonding at birth is not the norm for most fathers, and is not the norm for a significant proportion of mothers either.
Bonding is often better understood as a process rather than a moment. It develops through caregiving, through repeated skin-to-skin contact, through feeding (whether bottle or breast – bottle feeding creates significant bonding opportunity for fathers), through talking to and watching the baby, through responding to cries. The father who learns to interpret his baby's signals, whose presence begins to soothe the baby, who discovers the specific things that make this particular baby settle or smile – that father is building attachment in exactly the way it is supposed to be built.
Parents who are not experiencing any positive feelings toward the baby after a few weeks, or who feel persistently detached, hostile, or overwhelmed, should speak to their GP: these can be features of postnatal depression, which affects around 10% of fathers.
Postnatal Depression in Fathers
Postnatal depression in fathers is less visible than in mothers but is well-documented. James Paulson at Eastern Virginia Medical School published a meta-analysis showing that approximately 10% of fathers meet criteria for depression in the first year after their baby is born. The presentation often differs from the stereotypical picture of low mood: fathers with PND more commonly present with irritability, withdrawal, overwork (using work as a way to avoid being at home), substance use, and physical symptoms than with the tearfulness and sadness more typical of female depression presentations.
The risk factors include: history of depression, relationship difficulties, a difficult or traumatic birth, financial stress, poor social support, and having a baby who is unwell or has significant health needs. The partner's mental health is also predictive: when the mother has postnatal depression, the father's risk increases approximately threefold.
Most fathers do not seek help for their own mental health during the perinatal period. The combination of men's general reluctance to seek mental health support and the focus of postnatal services on the mother's wellbeing means that paternal depression frequently goes unrecognised and untreated. GPs are now encouraged to ask fathers about their mental health at the 6-week postnatal check (though this is inconsistently implemented), and PANDAS Foundation UK specifically supports fathers and non-birthing partners.
Practical Things That Help
Involvement from the start matters – not as a helper to the mother, but as a parent in one's own right with a developing relationship with the baby. Taking the baby for a walk to give the mother sleep, doing the bath, doing some of the night feeds, spending time skin-to-skin: these are not chores but the building blocks of a direct relationship with the baby.
Sleep deprivation affects everyone, and its effects on mood, patience, and relationship quality are significant. Couples who find a system for sharing night waking – whether by shifts, by alternating nights, or by whoever takes the feeding when formula or expressed milk is used – tend to manage better than those with no system. There is no single right answer, but a conscious conversation about it (before the baby arrives if possible) is worth having.
The relationship between partners changes after a baby. This is well-documented and not a sign of incompatibility: the demands of new parenthood reduce time for the couple, shift the balance of attention, and create role dynamics that weren't there before. Keeping some intentional time as a couple – even brief – and maintaining the habit of genuine conversation (not just logistics) is protective.
Andrew Way at NCT and research by the Fatherhood Institute in the UK have emphasised that fathers who are involved, engaged, and emotionally connected with their children benefit both the children and themselves: paternal involvement is associated with better child developmental outcomes and with father wellbeing in middle and older age.
Key Takeaways
The transition to fatherhood involves significant identity change and, for many men, a degree of psychological adjustment that is poorly prepared for and rarely discussed. Men experience hormonal changes in the perinatal period (including changes in testosterone, cortisol, and prolactin) that support bonding, though the profile differs from the postnatal changes seen in mothers. Paternal bonding often develops more gradually than fathers expect, frequently later than maternal bonding, and through hands-on care rather than birth experience. Around 10% of fathers develop postnatal depression. The parental role transition involves identity renegotiation that men generally receive less preparation and social support for than mothers do.
