CBT muted overactivity in the frontal cortex, the seat of reasoning, logic and higher thought as well as of endless rumination about that disastrous date.
So far, about the only evident cure that atomic medicine can claim is with radioactive iodine in severe cases of Graves's disease (overactivity of the thyroid gland).
Overactivity of the vagus nerve is tied up with overactivity of the thyroid.