Is there any truth to the epidemic of sex addiction? Are our children really getting sexualised younger? Are men the only ones who like porn? Brooke Magnanti looks at all these questions and more - and proves that perhaps we've all been taking the answers for granted.
Dr Brooke Magnanti is a science researcher who studied Genetic Epidemiology at master's level and did her doctoral studies with the Department of Forensic Pathology at the University of Sheffield.
Her professional interests include population-based research, standards of evidence, and human biology and anthropology.
In 2009 it was revealed that she is an ex-call girl and author of the bestselling Belle de Jour series of memoirs, which were adapted into the ITV series Secret Diary of a Call Girl starring Billie Piper.
Photo (c) Richard Saker Guardian News Media Ltd 2010