This work sought to identify the prevalence of overweight and obesity conditions and the associated factors in nursing students in a public university in Medellín, Colombia.This was a descriptive cross-sectional study conducted in 2015. The study selected 171 participants through stratified random sampling. A structured questionnaire was applied and weight and height were taken to calculate the body mass index (BMI).The prevalence of overweight condition was 25.1% and obesity at 7.6%. Statistically significant association exists with family background of overweight or obesity conditions (OR = 6.65) and the perception of unhealthy feeding (OR = 3.01). No association was found with cases suggesting anxiety and depression and physical activity.A high prevalence was found of overweight and obesity conditions in the population studied, which is why it is recommended to develop self-care programs in university populations, principally in Nursing, given that as future professionals they will be co-responsible for health promotion in individuals and collectives.