Caffeine is the most widely used ‘psychoactive’ drug (central nervous system stimulant) in the world 1       It's adored by many, and appears to be one of the most addictive compounds to let go of.  Clients often breeze through ‘Dry January’, yet look horrified at the suggestion of a ‘Caffeine-free month’.      Recently, the World Health Organisation (WHO) even recognised caffeine dependence as a new mental disorder - ‘Caffeine Use Disorder’ is now listed in the Diagnostic an