The complex legal status of cannabis and hemp continues to cripple CBD research on a global scale, and human studies remain very rare.

While research is still only performed on animals for the majority of conditions, a very important human study was specifically looking into the effects of CBD on blood pressure. 

This groundbreaking placebo-controlled, double-blind 2017 research was the first to look into whether CBD reduces blood pressure in humans, and it was inspired by previous preclinical studies which hinted that CBD offers a multitude of cardiovascular benefits.