US EditionNorwegian Study Finds Children Born Late in Year Face Higher Mental Health Risks
- A study published in April 2025 by researchers in Norway found that children born late in the calendar year are more likely to receive mental health diagnoses compared to their older classmates.
- Researchers examined national health registry data for over 1.1 million individuals born during the years spanning 1991 to 2012 to investigate the impact of relative age on psychiatric diagnosis rates.
- The research found that the youngest kids in a cohort were between 15% and 43% more likely to receive any psychiatric diagnosis, with ADHD rates increasing by 20% to 80%, particularly among the youngest girls born at full term or prematurely.
- Christine Strand Bachmann explained that children born prematurely already face increased vulnerability, and those born later in the calendar year experience additional risks on top of this existing susceptibility.
- The results indicate that differences in psychological diagnoses among younger students may be influenced by how the education system is structured, and implementing adjustable enrollment ages or enhanced resources could help minimize misdiagnoses associated with relative age effects.
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Why A Child's Birth Month Could Play A Major Role In Their Mental Health
Kids who are the youngest in their school class are significantly more likely to be diagnosed with psychiatric conditions than their older classmates. The post Why A Child’s Birth Month Could Play A Major Role In Their Mental Health appeared first on Study Finds.
Schoolchildren born late in the year may face greater risk of developing mental health problems
A recent study by the Norwegian University of Science and Technology (NTNU) has found that children born in October, November or December are statistically more often identified as having a mental health diagnosis than their classmates born earlier in the year. The findings apply to both boys and girls, and regardless of whether they were born full term or prematurely.
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