Shaw, P. (2015). Gene and environment interactions in the brain: A pathway to ADHD? Am J Psychiatry, 172(8).  Doi: 10.1176/appi.aip.2015.15050619. 

Gene and environment interactions in the brain: A pathway to ADHD?

Xavier University

One gene that is related to ADHD is 5-HTLPR, which affects the signaling of serotonin. It can be either in a short (S-allele) form or a long (L-allele) form. 

5-HTLPR Gene and ADHD

5-HTLPR Gene and ADHD References 

One study examines the interaction between this gene and chronic stressors or adverse experiences in the environment and its affect on the presentation of ADHD. They found that those with the S-allele form of the gene who experience stressors in their environment display more symptoms of ADHD than those with 2 L-alleles. 

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