<![CDATA[ABSTRACT The purpose of this study was to investigate the Prevalence of mental health disorders and associated co-morbidities health problems among elderly in sub-urban communities in Lagos State. Three research questions and hypotheses were formulated for the study. The study adopted a descriptive survey design; the population of the study consist of elderly in sub-urban communities in Lagos State while a sample of 300 elderly were selected from sub-urban communities in Lagos State and the instrument used was titled "Mental Health Disorders and Co-morbidities Questionnaire'(MHDCQ) was administered to three hundred respondents randomly selected from the population. The findings, revealed that there is a significant difference between prevalence of mental health disorder and associated co-morbidities health problems among elderly in Lagos State, there is significant relationship between mental health disorder and substance use among elderly in Lagos State, there is significant increase in the risk of developing chronic physical conditions among individual with mental health disorder among elderly in Lagos State , there is significant genetic predisposition to mental health disorder and associated comorbidities among elderly in Lagos State, Based on the findings the study recommends that: University should prioritize the establishment of comprehensive mental health services and support systems on campus, Implement evidence-based substance use prevention programs and policies within the university, Develop collaborative initiatives between the university's health services and local healthcare providers to ensure that students with mental health problems have access to comprehensive care for their physical health needs, Provide support groups or peer networks for students with genetic predispositions to mental health issues, university should take proactive measures to identify and mitigate environmental stressors on campus. KEY WORDS: Chronic Physical Conditions, Co-morbidities, Environmental Stressors, Mental Health Disorders, Substance use disorder.]]>
