Alarming decreases in world trends of semen quality have been ascertained. Moreover, regional variations in semen quality have also been reported. Because comprehensive research on male reproductive function in Bihar is lacking, the aim of this study is to characterize infertility in males of Sasaram at a regional level through semen parameters. Cross-sectional data were collected from males of age group 20-59 years visiting at Kumar Janch Ghar, Sasaram from 2018 to 2019 (n=2117). We tend to evaluate the effect of soybean added nutrition on changes in conventional semen parameters and therefore the potential mechanisms involved. Measures of central tendency, simple and pair-wise correlation, multivariate analysis and two-way ANOVA were applied during this study. The work inferred that the inclusion of soybean in the diet in a very routine north Indian diet significantly (P<0.05) declined the total sperm count, sperm viscosity, sperm density, sperm viability but increase sperm motility. Therefore, we propose that semen parameters could be related to the inclusion of soybean in the diet of men. These findings have to be complied to be more investigated in the general population and large sample cohort studies.