Don of documentaries Louis Theroux

From polyamory to Scientology, modern-day Nazism to the right to die, no difficult subject is off limits when it comes to documentary maker Louis Theroux.

This Sunday, he’s back with a brand new episode Louis Theroux: Mothers on the Edge which focuses on postpartum psychosis - a programme he says is his most emotional ever.

With one in five new mums experiencing a mental health problem before their child’s first birthday in the UK, Louis reveals why he decided to focus on the sensitive subject - which included spending time in two psychiatric units, his own personal experience as a dad, and his reaction to being an unlikely sex symbol.