Hundreds of Genes Could Be Linked to ADHD
"When we began this study in 2003, we expected to find a handful of genes that predispose a child to ADHD," study co-leader Peter S. White, a molecular geneticist and director of the Center for Biomedical Informatics at The Children's Hospital, said in the release.
"Instead, there may be hundreds of genes involved, only some of which are changed in each person. But if those genes act on similar pathways, you may end up with a similar result -- ADHD. This may also help to explain why children with ADHD often present clinically with slightly different symptoms," White said.
The cause of ADHD isn't known, but studies have shown that it's strongly influenced by genetics.
ADHD, which affects about one in 20 children worldwide, may include symptoms such as hyperactive behavior, impulsivity, inattention, impaired planning and organizing skills, and difficulty maintaining focus.
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