Background: The ‘Japa’ syndrome, derived from a Yoruba expression meaning to flee or escape, has evolved from colloquial slang into a recognizable structural pattern of mass emigration among skilled Nigerian healthcare professionals to high income countries.

Purpose: This systematic review investigates the domestic push factors and international pull factors driving this outward migration of health workers, synthesizes evidence on its cumulative impact on Nigeria's healthcare delivery system, and critically appraises intervention strategies aimed at stabilizing the national health workforce.

Methods: A systematic search was conducted in PubMed, Google Scholar, ScienceDirect, and African Journals OnLine (AJOL) for peer reviewed studies published between 2020 and 2026. Data extraction focused on economic, structural, infrastructural, and psychosocial determinants of migration, alongside clinical performance indicators and health policy models.

Key Findings: The domestic context is characterized by intense macroeconomic pressures, including high inflation, persistent currency devaluation, degraded clinical infrastructure, and pervasive insecurity. These factors interact with strong international pull dynamics such as markedly higher remuneration, structured career trajectories, and relatively stable social environments in destination countries such as the United Kingdom, Canada, and the United States. Quantitative estimates indicate that more than 15,000 physicians and several tens of thousands of nurses have emigrated over a five year period, distorting clinician to patient ratios well beyond World Health Organization (WHO) recommended thresholds. The resulting workforce deficit has precipitated severe burnout among remaining clinicians, lengthened patient waiting times, and compromised clinical safety, thereby contributing to increased avoidable hospital mortality. Legislative attempts to retain professionals through coercive or restrictive regulations have encountered strong opposition and have not addressed underlying systemic drivers.

Conclusion: Sustainable workforce retention will require a departure from

restrictive, coercive mandates towards integrated economic and institutional reforms. Priority measures include inflation indexed salary restructuring, substantial hospital modernization, and transparent, merit based career progression pathways. In addition, reframing policy from a narrow ‘brain drain’ narrative to a ‘brain circulation’ paradigm operationalized through formal diaspora engagement frameworks (‘Japada’) offers a scalable mechanism to channel global capital, technical expertise, and knowledge flows back into Nigeria's health system.

‘Japa’ Syndrome, Brain Drain, Nigerian Healthcare Workforce, Health Retention Policy

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