This BBC series gives the viewer new insights into how drugs affect the body.
This series uses visual effects and CGI and, for the first time ever, takes the viewer on an entire trip from start to finish inside the human body.
This first episode draws heavily on research carried out in association with the Beckley Foundation at University College London with Prof. Valerie Curran and Dr. Celia Morgan.
With testimony from people who enjoy using the drug and those who have become addicted, the programme reveals how cannabis takes over the inner workings of the brain, creating mind-warping and heart-racing effects.
With exclusive access to cutting edge scientific research, it confronts the myths and controversies that surround cannabis, reveals whether it is addictive, if it destroys our memories and finds out if it can even lead to psychosis.
Part of the Dangerous Pleasures season on BBC Three.
How Drugs Work: Ecstasy
How Drugs Work: Cocaine