This week I read a really interesting article about ADHD called "First Direct Evidence That ADHD Is a Genetic Disorder: Children With ADHD More Likely to Have Missing or Duplicated Segments of DNA" . The article was about the researchers identifying a gene that could be linked to ADHD. This is different than what is previously thought; that ADHD was caused by poor parenting skills or poor diet. The researchers tested 1,000 unaffected children and 336 children affected by ADHD and compared their genomes. They found that children who had been diagnosed with ADHD have significantly higher rates of duplicated or missing sequences of DNA. Also, it has been identified that the parts of the DNA that have been affected are also the parts that influence susceptibility to Autism and Schizophrenia. It is thought that ADHD is not caused by just one genetic change but by many genetic changes and how they interact with the person's environment. The researchers do not think that genetic testing would be a good way to diagnose children. They think the clinical assessment already in place to test for ADHD is good enough. However, this research is important because it provides new information about the disease and also helps to remove the stigma of ADHD being cause by poor diet and poor parenting skills.