We tend to think male libido is all about hormones raging early, then a slow, inevitable decline, but a major new study turns that idea on its head. It found that men’s sexual desire actually peaks in their forties. If testosterone is already falling by then, what’s really fuelling desire: biology, confidence, relationships, or something else entirely?

Joining Seán to discuss is Clinical Sexologist and Psychosexual Therapist, Emily Power Smith.