Richard Roxburgh unpacks the science of the two most commonly used legal drugs: tobacco and alcohol. Science historian Professor Robert Proctor reveals how the nicotine habit transformed into such a lethal addiction.

Cannabis, psychedelics, and MDMA are all experiencing a research renaissance, as scientists reach new understandings of their interaction with the human body and mind.

Take a look at the different effects of caffeine, cocaine, and methamphetamine. Two-time world surfing champion Tom Carroll opens up about his own battle with addiction and how he got clean.

Examining the opioid crisis in the United States and taking a look at diseases caused by poor diet and sugar addiction.