Nathalie Jadeau

Narrator (voice)

Jo Adams

Self - Sheffield Centre for HIV and Sexual Health

Natalie Angier

Self - New York Times Columnist

Melissa Cull

Self

François Giuliano

Self - Urologist

Ravyn Godwin

Self

Ellen Laan

Self - University of Amsterdam Professor

Leonore Tiefer

Self - Professor of Psychiatry at New York University School