A new study suggests that it takes at least a year for former methamphetamine users to regain impulse control. In the report published online by the Journal of Substance Abuse Treatment , University of California at Davis researchers warn recovering substance abusers, their families and drug-treatment specialists that it can take an extended period of time for the brain functions critical to recovery to improve. “Recovery from meth abuse does not happen overnight,” said Ruth Salo, lead aut

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