Objectives: This descriptive study of 219 undergraduate medical students at Patan Academy of Health Sciences in Nepal was conducted to evaluate the relationships of their demographic variables with a health-promoting lifestyle profile. Methods: The Health Promoting Lifestyle Profile (HPLP) questionnaire was used to study students' lifestyles. We compared the HPLP scores according to gender, residence type, school background and year of study. One-way analysis of variance (ANOVA) and multiple comparison test were conducted to identify significant differences among university year (first, second, third and fourth) groups. Multiple regression analysis was used to analyze the effects of various demographics on the overall HPLP score and the six health-promoting lifestyle subscales. Results: The overall HPLP mean score of participants was 2.60 ± 0.29, with the highest mean scores being for spiritual growth (2.99 ± 0.42) and interpersonal relations (2.90 ± 0.35), and the lowest mean scores being for health responsibility (2.39 ± 0.39) and physical activity (2.25 ± 0.54), respectively. The overall HPLP score of the students was the highest for the first year students at 2.65 ± 0.26. The male students had a better overall HPLP score, although female students obtained better score in some sub-scales such as health responsibility, interpersonal relations and nutrition. The students from a public school background had significantly higher scores for health responsibility, physical activity and stress management than those who graduated school level education from a private school. Conclusions: The results of this study reveal that the status of health promoting behaviors among the students was acceptable with ample room for improvement. Implementation of health education and promotion programs with an How to cite this paper: Paudel, S., GC,