what was interesting was the study of ADHD related genes in Kenyan nomads :
- The nomads with the ADHD-related gene were found to have a higher body mass index than their settled counterparts with the gene. Novelty-seeking and increased impulsivity may have helped the nomads to obtain food. The researchers also suggested that the shorter attention span conferred by the DRD4 7R gene might help nomadic children to learn more efficiently in a rapidly changing outdoor environment.
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