Bisexuality is the largest sexual minority in the world and the least well understood. This book sets out to answer some of the questions that many people have about bisexuality.

In Bi Julia Shaw explores how people have defined and measured bisexuality during its long and important history. She looks at behavioural bisexuality in animals, and investigates whether there is a bi gene. She introduces some famous bi activists and scholars whom everyone should know. She examines the latest research on bisexual kids, parents and grandparents, and explores bisexual identities across the lifespan. She asks why so few bisexual people are out, and examines the mental and physical health consequences of this. She also questions societal reactions to bisexuality (are bi people more promiscuous? No). She explains the visual language of bisexuality, about bi visibility on screen and the colourful world of bisexual communities.

This book aims to demystify bisexuality and celebrate it. Today, most bisexual activists and researchers define bisexuality as attraction to more than one gender, and this is a book for anyone whether they identify as bisexual, plurisexual, pansexual, omnisexual, polysexual, fluid, unlabelled, any related label or who just wants to know more.