Inhaling whole-plant cannabis provides symptomatic relief in patients with Parkinson’s disease (PD), according to observational trial data published in the March/April edition of the journal Clinical Neuropharmacology. Researchers reported that inhaled cannabis was associated with “significant improvement after treatment in tremor, rigidity, and bradykinsea (slowness of movement). There was also significant improvement of sleep and pain scores. No significant adverse effects of the drug were observed.”