Caffeine Can Cloud MRIs

Drinking it can skew results on brain scans, study finds

WEDNESDAY, April 2 (HealthScoutNews) -- Caffeine can skew the results of functional magnetic resonance imaging (fMRI) studies of blood circulation in the brain.
A study from the Wake Forest University School of Medicine found an amount of caffeine equal to what's in two to three cups of coffee can constrict blood vessels and reduce cerebral blood flow. The report appears in the April issue of Radiology.

More...