要点
- First-born children have a higher risk of ADHD and autism
- Over 10 million siblings' health problems were examined
- Genetic and environmental factors may be the cause
数字で見る
10 million
A study conducted in the United States found that first-born children are more prone to health issues such as ADHD and autism.
The study examined the health problems of over 10 million siblings and found that first-born children are at a higher risk of conditions such as ADHD, autism, Tourette's syndrome, and obsessive-compulsive disorder. The researchers did not determine the exact cause of these differences but believe that genetic and environmental factors may play a role.
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よくある質問
- Why are first-born children at a higher risk?
- The researchers did not determine the exact cause, but they believe that genetic and environmental factors may play a role.
- In which country was this study conducted?
- The study was conducted in the United States.
- How many siblings' health problems were examined?
- The health problems of over 10 million siblings were examined.