Professor of Neuroscience and Psychology, with a research appointment at the Institute for Brain Research, Universidad Veracruzana, in Xalapa, México. Dr Pfaus got interested in the neurobiology of sex at an early age. For over 30 years, he has conducted extensive research into the brain mechanisms of sexual arousal, desire, pleasure, and inhibition, working with both laboratory rats and humans. This work has revealed how sexual experience alters these systems’ function, which has helped to identify potential pharmacological treatments for desire, arousal, and orgasm disorders. Dr Pfaus has authored over 220 peer-reviewed scientific papers and book chapters and has received numerous research awards. He is the current Editor-in-Chief of the journal Current Sexual Health Reports, Associate Editor of Sexual Medicine Reviews, is a past-president of the International Academy of Sex Research, and a fellow of the International Society for the Study of Women’s Sexual Health.