Objectives: The aims of this study were tofind out various factors responsible for FTT in the babies less than one year and the impact of breast feeding on prevention of FTT. Material and methods: The sampling procedure for the cases was stratified random sampling. All cases with weight below 2nd major line were considered FTT and were included in the study. A detailed history of presenting complaints, in chronological order was inquired on prescribed performa. Results: In present study, FTT is mostly present among children aged 0-3 months i.e. 67%. The incidence of FTT is higher among male than female babies. FTT is present nearly twice among urban babies as compared to rural babies. FTT is mostly non-organic i.e. 86% and the common risk factors are illiteracy 75%, poverty 63%, poor sterilization 48%, absolute and partial lack of breast feeding 81 %, improper dilution and hence under feeding 44% and absence of proper weaning 67%. In most of the babies suffering from severe FTT more than 4-5, risk factors are operating. In moderate FTT less than 4, risk factors are operating. Conclusion: As a result of this study, we have suggested preventive measures for FTT.