The brain mediates your perception, thoughts and actions. If one part of the system is out of balance, the effects can ripple out into many other areas.
If you are experiencing emotional or functional difficulties, we will see over or under-activity in the corresponding areas of the brain. These areas will be working harder than the others, and putting the brain out of balance.
When our brain activity is out of balance, there will be corresponding problems in our emotional or physical health.