ADHD and autism associated with in utero heavy metals and essential minerals
medicalxpress.com
medicalxpress.com
Edit: link to article https://www.sciencedirect.com/science/article/pii/S016041202...
There are other types of people who for whatever reason have imbalance in the regions of their brain and end up with unique functioning. This is where "edge" comes from. Deformities that lead to small verticals of super human capability, which comes at the expense of being able to live a normal life.