ADHD is a condition that makes it hard for people to focus and control their actions, and it's linked to how the brain develops.
A special transporter in the brain called VMAT-2 is important for how certain ADHD medicines, like stimulants, work, but other treatments still need more research.
Studies show that some things like omega-3 fatty acids and other supplements might help with ADHD, but scientists need to study these ideas further with people to understand more.