“The negative effects of caffeine are often not recognized as such because it is a socially acceptable and widely consumed drug that is well integrated into our customs and routines,” Laura Juliano said. “And while many people can consume caffeine without harm, for some it produces negative effects, physical dependence, interferes with daily functioning, and can be difficult to give up, which are signs of problematic use.”
Steven E. Meredith, Laura M. Juliano, John R. Hughes, Roland R. Griffiths.Caffeine Use Disorder: A Comprehensive Review and Research Agenda.Journal of Caffeine Research, 2013; 3 (3): 114 DOI: 10.1089/jcr.2013.0016
Yes, Coffee is the lifeblood of the US Navy. And some of the mud in those big Silex brewers looks a lot like “syrup” when it’s been brewing and stewing for a few days. But it might not be all that good for you. Studies show that it might be good to limit consumption to 2 or at the most 3 caffeine drinks a day as a rule of thumb. Or 1 five hour energy/large Red Bull, etc.