Obviously, women who give birth undergo some pretty extreme changes, both physically, hormonally, and mentally, during and after childbirth. Entire organs shift around, hormones go bonkers, and the brain itself restructures in preparation for parenthood.
But dads aren’t just chilling in the hospital parking lot enjoying a fine cigar. According to new research from RWTH Aachen University, the brains of new dads change dramatically too once a baby enters their lives.
In a study published in Translational Psychiatry, researchers scanned the brains of 25 first-time fathers during the first 24 weeks after childbirth and found that fatherhood triggers a major neurological remodeling process. New dad brains look like they prune away some neural pathways while strengthening others, almost like it’s hastily renovating itself to make room for a tiny new life that has to take care of, kind of like how the parents scrambled to convert their home gym into a nursery.
A Look Inside a New Dad’s Brain
During the first 12 weeks after birth, gray matter volume in several brain regions shrank, especially in areas tied to attention, sensory processing, and decision-making. That sounds like exactly what you don’t want a dad’s brain to do when it has to take care of his tiny, fragile baby, but the researchers say that this type of shrinkage is more about the brain reorganizing itself to be more efficient.
Between weeks 12 and 24, other parts of the brain start increasing in volume. The researchers found the biggest changes in the anterior cingulate cortex, the parts of the brain involved in anticipating tasks and dividing attention, which makes a lot of sense when all of a sudden your daily schedule is upended and becomes a perpetual cycle of trying to live a normal life while also trying to keep a baby alive and happy.
The researchers also found changes in the substantia nigra. It’s part of your brain’s reward center, and it helps regulate dopamine. They found stronger connectivity in the amygdala, which is the emotional part of your brain that helps with parental attachment.
The researchers note that they still don’t know how long these changes last in dads, but all told, the findings help draw a clearer picture of how parenthood doesn’t just bring new life into the world, but also reshapes the people who made the baby so they can be primed and ready to take care of their new child.
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