ADHD stimulants appear to work less by sharpening focus and more by waking up the brain. Brain scans revealed that these ...

Prescription stimulants, such as Ritalin and Adderall, are widely used to treat attention deficit hyperactivity disorder ...

Background: Since 1990 it was proposed that distal and proximal location of colon cancer might follow different biological, epidemiology, pathology and prognosis, probably due to embryologic different ...