Psychologist Kimberley Wilson and Dr Xand van Tulleken take a journey around the human body, to find out what it can tell us about our innate capacity for change. This time, the ovaries go under the microscope.

Kimberley and Xand hear from someone whose ovaries have caused them to hurtle through major life stages in the course of a few years, meet a scientist who thinks we may have female fertility all wrong, and examine the unresolved mysteries of the menopause.

Producer: Georgia MillsResearcher: Leonie ThomasExecutive Producer: Robert NicholsonA Whistledown production for BBC Radio 4