The influence of early sexual debut on the formation of sexual behavior in adulthood

Abstract

Background. The formation of sexual behavior is a complex, multifactorial process influenced by puberty, first intimate experiences, and sociocultural environment. Global trends indicate an earlier age of sexual debut among adolescents, raising concerns about long-term psychosexual outcomes. Purpose – to comprehensively analyze the influence of early sexual debut on the development of adult sexual behavior, with emphasis on psychological, neurobiological, and sociocultural determinants. Materials and Methods. A mixed-method design was applied, combining a quantitative survey of 135 respondents aged 18–69 and a systematic literature review (PRISMA-2020 guidelines). Participants were assessed for demographic characteristics, age of first sexual experience, emotional readiness, and subsequent sexual and relational patterns. Validated psychometric tools, including the Mini-Mental State Examination, ensured cognitive adequacy of respondents. Exclusion criteria covered acute psychiatric disorders and cognitive impairments. Results. Most participants (86.4%) belonged to the 18–25 age group; 66.7% were female, 31.8% male, 1.5% non-binary. The average age of sexual debut clustered between 16–18 years (40.2%), while 18.2% reported debut at 13–15 years, and 0.8% before 12 years. Only 44.9% felt fully emotionally ready at their first sexual experience, whereas 14.2% reported complete unpreparedness. Early debut correlated with increased impulsivity, relational instability, higher prevalence of risky sexual practices, and vulnerability to sexually transmitted infections and unintended pregnancies. A conceptual typology of five sexual personality scenarios (normative, delayed, accelerated, traumatic, and asexual/chaste) was proposed, reflecting the interplay of biological maturity, cognitive-affective readiness, and sociocultural context. Conclusions. Early sexual debut is associated with heightened psychosocial risks and maladaptive behavioral trajectories in adulthood. The findings emphasize the necessity of integrative, interdisciplinary approaches to sexual health, alongside age-appropriate, emotionally sensitive sex education programs that address not only biomedical but also psychological and ethical dimensions of sexuality.