This paper addresses the complex phenomenon of new religious movements and their impact on individual freedom. The first chapter defines the concept of new religious movements and explains their position in contemporary society. The second chapter provides an overview of several well-known cults, highlighting the various strategies of manipulation and control employed by these groups. These examples clearly demonstrate the extreme consequences that cultism can have on individual freedom, including physical isolation, psychological control, and, in the most extreme cases, mass suicides and violence. The study also explores the process of entering, remaining in, and leaving a cult, with a particular focus on young people, who are often in a vulnerable stage of life and more susceptible to the appeal of such groups. The paper emphasizes that leaving a cult often requires a lengthy process of deprogramming and psychological rehabilitation, underscoring the need for better understanding and support for former members. The fourth chapter thoroughly analyzes the psychological aspects of new religious movements, including the manipulative techniques used by cult leaders to attract and retain members. Psychological aspects of conversion, seduction syndrome, brainwashing, and the alteration of conscience are described as key factors that can lead to schizoid states and other mental disorders among members. Sexual manipulation within new religious movements further complicates the situation, often involving abuse of power. Deprogramming, described as a controversial but often necessary intervention, represents a crucial step in leaving a cult. Although criticized for its methods, deprogramming has helped many former cult members regain control over their lives and restore critical thinking. The influence of new religious movements on individual freedom can be profoundly destructive. Through the analysis presented in this paper, it is clear that these movements can severely undermine psychological stability, alienate individuals from their families and society, and jeopardize their freedom. Therefore, it is essential to continue studying this phenomenon from an interdisciplinary perspective to develop effective strategies for prevention and assistance to affected individuals. Only through deeper understanding and appropriate interventions can we protect the freedom and psychological health of those influenced by new religious movements.