There is a hidden addiction plaguing humanity right now: revenge. Researchers have identified retaliation in response to real and imagined grievances as the root cause of most forms of human aggression and violence. From vicious tweets to road rage, murder-suicide, and armed insurrection, perpetrators almost always see themselves as victims seeking justice. Chillingly, recent behavioral and neuroimaging studies of the human brain show that harboring a personal grievance triggers revenge desires and activates the neural pleasure and reward circuitry of addiction.
Although this behavior is ancient and seems inevitable, by understanding retaliation and violence as an addictive brain-biological process, we can control deadly revenge cravings and save lives. In The Science of Revenge: Understanding the World's Deadliest Addiction—and How to Overcome It (Random House, 2025), Yale violence researcher and psychiatry lecturer James Kimmel, Jr., JD, uncovers the truth behind why we want to hurt the people who hurt us, what happens when it gets out of hand, and how to stop it.
Weaving neuroscience, psychology, sociology, law, and human history with captivating storytelling, Dr. Kimmel reveals the neurological mechanisms and prevalence of revenge addiction. He shines an unsparing light on humanity’s pathological obsession with revenge throughout history; his own struggle with revenge addiction that almost led him to commit a mass shooting; America’s growing addiction to revenge as a special brand of justice; and the startlingly similar addictive behaviors and motivations of childhood bullies, abusive partners, aggrieved employees, sparring politicians, street gang members, violent extremists, mass killers, and tyrannical dictators. He also reveals the amazing, healing changes that take place inside your brain and body when you practice forgiveness. Emphasizing the necessity of proven public health approaches and personal solutions for every level of revenge addiction, he offers urgent, actionable information and novel methods for preventing and treating violence.

James Kimmel, Jr. is an assistant clinical professor in psychiatry at the Yale School of Medicine, a lawyer, and the founder and co-director of the Yale Collaborative for Motive Control Studies.

Caleb Zakarin is editor of the New Books Network.

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