On this week's podcast, we look at chemsex: what is it, what accounts for its rise in popularity in Ireland, and what is its connection to the drug GHB? To find out more, we speak to the experts: Dr Kiran Santlal, registrar in psychiatry of substance misuse at the National Drug Treatment Centre (NDTC) and Graham Ryall, treatment services coordinator at the Rialto Community Drug Team. They join our reporter Órla Ryan, who has been writing about chemsex, and presenter Sinéad O'Carroll to discuss the topic.