Why Is Paternal Depression Overlooked? The True Nature of Increased Risk One Year After Childbirth

Right after a baby is born, fathers can sometimes appear surprisingly "unfazed." The attention of those around them is focused on the mother and baby, and the fathers themselves feel the need to be the supportive ones. However, is this stability genuine? A large-scale study tracking over a million fathers in Sweden revealed a significant pitfall in this perception. While diagnoses of mental disorders in fathers decrease from pregnancy to immediately after childbirth, depression and stress-related disorders actually increase nearly a year after the child is born.

This study tracked 1,096,198 fathers who had children in Sweden between 2003 and 2021, covering 1,915,722 births, and monitored the trends of new psychiatric diagnoses from one year before pregnancy to one year after childbirth. Overall, the frequency of fathers being diagnosed with any mental disorder decreases during pregnancy and the early postpartum period, then returns to pre-pregnancy levels in the later postpartum period. Thus, if one only looks at the immediate post-birth period, it might seem that "fathers' mental health is relatively stable."

However, when broken down by specific disorders, the picture changes. While anxiety disorders and alcohol or substance-related disorders generally return to pre-pregnancy levels in the later postpartum period, depression and stress-related disorders follow a different trajectory. The study shows that at 45-49 weeks postpartum, the incidence rate ratio for depression is 1.30 and for stress-related disorders is 1.36, indicating levels over 30% higher than before pregnancy. Fathers' mental health issues may not explode at the moment of childbirth but rather manifest clinically after the daily burdens have accumulated.

The research team also found this "delayed increase" unexpected. The background factors cited include worsened sleep due to childcare, changes in partner relationships, and the burden of balancing work and family. An invited commentary in JAMA Network Open highlights the importance of distinguishing whether "fathers' depression starts later" or if "symptoms were present earlier but medical attention was delayed." In other words, fathers' mental health issues may not truly be delayed; they might progress unnoticed by both the fathers and those around them, only reaching diagnosis nearly a year later.

A crucial aspect of interpreting this study is that it only looks at "diagnosed individuals." The paper clearly states that the national data primarily centers on specialized medical registers, potentially missing those who did not seek medical attention or were mainly treated in primary care. In fact, the commentary references a prior meta-analysis using self-report scales, suggesting that depressive symptoms in fathers may be more widespread than the figures emerging in specialized medical settings, with 9.8% during pregnancy and 8.8% within the first year postpartum. It is risky to interpret the low number of diagnoses as "fathers are not suffering that much."

Rather, this study may have highlighted the "structure that makes fathers' mental health issues easy to overlook." Perinatal mental health for mothers is treated as an important issue in many countries, with screening and support systems relatively well-established. In contrast, fathers have fewer opportunities to seek medical attention and are often seen by those around them as "adults who can endure" or "breadwinners who should hold firm." The commentary argues for a shift in viewing perinatal mental health from a mother-child focus to a "family unit" perspective, creating pathways for fathers to access consultation and screening with low barriers.

Moreover, fathers' mental health issues are not just a personal problem. A systematic review and meta-analysis in JAMA Pediatrics in 2025 found that fathers' depression, anxiety, and stress during the perinatal period were associated with poorer outcomes in children's socio-emotional, cognitive, language, and physical development. Fathers' mental states should be treated not as a "supporting role" separate from mothers but as a variable affecting the health of the entire family.

Reactions on public social media and forums also reflect the implications of this study well. On science and psychology threads on Reddit, there was strong empathy for chronic sleep deprivation, with comments like "saying sleep quality worsens is an understatement" and "the difference between two hours of sleep and three is a whole different world." Additionally, voices were raised about the lack of discussion and support for paternal postpartum depression, with many seeing the study results as putting a name to their experiences.

Another common theme was the mention of isolation and the burden of balancing work and childcare, with comments like "juggling work and parenting is tough" and "fathers tend to drift away from friendships when children are born." Furthermore, given the relatively high participation of fathers in childcare in Sweden, some posts considered that "in a society where fathers are more involved in care, this burden might be more visible." In Sweden, there is a total of 480 days of parental benefit per child, with 240 days allocated to each parent, and 90 days are non-transferable. Official explanations indicate that fathers take about 30% of paid parental leave on average. However, this is not a causal relationship directly proven by this study but rather an interpretation commonly seen in public posts.

What is important is that this study is not just emotionally appealing that "fathers also suffer." Its value lies in showing, with large-scale data, the time series of when and what types of issues are prominent. Just because fathers appear calm immediately after childbirth does not mean it is safe to assume they are fine. Rather, nearly a year later, when sleep debt, work responsibilities, changes in marital relationships, and social isolation have gradually accumulated, is the time to be particularly vigilant.

Just as maternal postpartum depression has been visualized, it is now necessary to update the "timing of fathers' issues." It is crucial not to leave fathers' mental health behind in the shadow of celebratory moods. Attention should be paid not only right after childbirth but also several months, six months, and a year later. This study may serve as a catalyst to shift the discussion on paternal postpartum mental health from "whether it exists or not" to "when it appears and why it is overlooked."

Source URL

ScienceDaily (An article summarizing research from Karolinska Institutet for the general public)
https://www.sciencedaily.com/releases/2026/03/260324230057.htm

Original release from the research institution (Official explanation by Karolinska Institutet, used for researcher comments and key point verification)
https://news.ki.se/fathers-mental-health-deteriorates-long-after-the-birth-of-their-child

Original paper (Primary research published in JAMA Network Open, used for verifying the number of subjects, methods, results, and limitations)
https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2846841

Invited commentary in JAMA Network Open (Used for interpreting the current study, supplementing the need for family unit support and addressing diagnostic delays)
https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2846844

2025 JAMA Pediatrics paper summarizing the association between fathers' perinatal mental health issues and children's development
https://jamanetwork.com/journals/jamapediatrics/fullarticle/2834898

Official explanation of Sweden's parental benefit system (Verification of 480 days, 240 days per parent, and 90 non-transferable days)
https://www.forsakringskassan.se/english/parents/when-the-child-is-born/parental-benefit

Official explanation regarding the percentage of fathers taking parental leave in Sweden (Verification that fathers take about 30% of paid parental leave)
https://sweden.se/work-business/working-in-sweden/work-life-balance

Pages used to confirm reactions on public social media and forums (Used to understand reactions regarding sleep deprivation, lack of support, balancing work and childcare, and fathers' participation in childcare)
https://www.reddit.com/r/science/comments/1s1s87f/fathers_mental_health_deteriorates_long_after/
https://www.reddit.com/r/psychology/comments/1s1s8m8/fathers_mental_health_deteriorates_long_after/