Introduction: Public health campaigns and interventions designed to promote healthy behaviors such as diet often assume that if people know what is good for them, they are more likely to act in their own best health interest. Objectives: The main objective of the study is to find the knowledge and practices regarding fiber diet among nurses. Material and methods: This cross-sectional study was conducted in The Children's Hospital and Institute of Child Health, Lahore during 2018 to 2019. Food frequency questionnaires assess usual frequencies of intake using a structured list of foods over a specified period of time in the past; in the NHSs, we have focused on food intake over the previous year. Results: When formulating dietary guidelines, randomized controlled trials are typically considered the highest level of evidence. However, they are usually not the most appropriate or feasible study design for answering questions regarding long-term effects of diet on chronic disease risk because the drug trial paradigm does not neatly apply to dietary hypotheses. Conclusion: It is concluded that several demographic factors (female gender, urban environment, and especially university education) were associated with both greater knowledge of dietary fibre and greater consumption.