Associate Professor Nagahide Takahashi, Department of Medical Care for Parents and Children, Nagoya University Hospital, and Akemi Okumura, Specially Appointed Assistant Professor, Kenji Tsuchiya, Hamamatsu University School of Medicine's Center for Child and Mental Development are one of the developmental disorders. It was revealed that the intensity of ADHD (attention deficit hyperactivity disorder) symptoms is related to the time of falling asleep in children.
According to Nagoya University, ADHD is not good at staying still and is characterized by the inability to maintain concentration, and it is reported to be found in about 18% of people under the age of 5 and about 2.5% of adults.
The research team targeted 8 children who were entered at birth in the Hamamatsu Mother and Child Birth Cohort Study at Hamamatsu University School of Medicine, who continued to participate from 9 to 835 years old and agreed to genetic analysis. In addition, we investigated the relationship between the genetic risk and symptoms of ADHD and sleep onset time.
As a result, it was found that the slower the sleep onset time, the stronger the hyperactivity / impulsive symptoms and inattention symptoms.Total sleep time and time to fall asleep were not associated with symptoms.In addition, children with high or moderate genetic risk had slightly higher symptoms due to late sleep onset, while children with lower risk could be about 20% stronger. It was revealed.
The researchers say that children with late sleep onset may be highly valued for ADHD symptoms, and need to know how long they fall asleep to see if they are overdiagnosed.
