Understanding Neurodivergence

Genetics and Serotonin Keep Showing Up in ADHD Content. Here's What's Actually Solid.

TPH1/TPH2, SLC6A4, HTR1/HTR2 - serotonin gene explainers are everywhere right now. Some of it is textbook-accurate. Some of it is one researcher's theory presented as settled fact. And serotonin isn't even ADHD's primary biology - here's where it actually matters.