"Doctor, is this really necessary?" Backed by startling statistics about overtreatment, neurosurgeon Christer Mjåset explains the power of this and other simple questions in the context of medical treatment and surgery -- and shares how patients can better work with doctors to get the care they need.

Christer Mjåset's talk addresses one of the biggest problems in Western medicine: over-treatment. Although doctors rely on standards and recommendations in medicine on all levels, variation in the use of diagnostic tools and treatment is a widespread phenomenon. What can you do as a patient to battle over-treatment and how can you benefit from t...