Aims and Objectives: To identify the prevalence and the complications of dyslipidaemia, hypertension and diabetes mellitus. Methodology: A retrospective, observational and analytical study which is conducted for 6 months in a multi-speciality hospital, AWARE GLENEAGLES GLOBAL HOSPITAL, L.B. NAGAR, HYDERABAD. The study was carried out in a sample size of 191 patients of age above 35yrs, who were treated in the cardiology and the endocrinology department. The present medical condition and past medical history of the patient were reviewed. All the patients’ details were collected in the patient profile form which was obtained from the medical records of the patients in the departments included in the study. Results: A total of 191 patients were included in the study, of which males were found to be 127 (66.4%) and females 64 (33.6%). Most of the people suffering from these conditions belonged to an age group of 60-69 years (29.84%). Among the study population, 159 patients were found to be obese (83.25%) and non-obese were found to be 32 (16.75%). The prevalence of complications in dyslipidaemia, hypertension and diabetes mellitus included cardiac diseases (45.94%), followed by kidney diseases (18.9%). The mortality rate in the study population was found to be (8.11%). In the study, smokers were found to be 60.2% and alcoholics were found to be 62.8%. Conclusion: According to the study conducted, the interlink between diabetes mellitus and hypertension was found to be more when compared to the interlink between diabetes dyslipidaemia and hypertension and dyslipidaemia. Keywords: Dyslipidaemia, hypertension, stroke, acute kidney injury, diabetes mellitus.