"If you drink too much caffeine your head will explode," my son said today. I reassured him that while too much caffeine isn't healthy, heads don't explode from overindulgence. Explaining the irrational nature of his fears puts my son's mind at ease. But what if he had Obsessive-Compulsive Disorder? Maggie, our guest on the HealthyPlace Mental Health Radio Show, says Exposure Therapy is far more effective treatment for OCD than explanations and reassurance.