<http://schema.org/description>
"Studies have shown that caffeine users can become dependent on or addicted to caffeine and may have difficulty reducing their consumption, as can occur with other drugs of dependence. A comprehensive review of the current evidence on caffeine dependence is presented in an article in Journal of Caffeine Research."^^<http://www.w3.org/2001/XMLSchema#string>
<http://medicalxpress.com/news/2013-09-urgently-caffeine.html>