Introduction: Human milk alone is a complete nutrition for the newborn till 6 months of life. Due to consumption of grains stored in humid and hot rooms and drinking contaminated animal milk, pregnant and lactating mothers can transmit Aflatoxins to the fetus in the womb or to the infant through breast milk. Few studies have reported plausible growth faltering among infants due to exposure to aflatoxins. Methodology: A Longitudinal study with sample size of 45 nursing mothers was conducted. AFM1 quantification was done by ELISA. We followed the birth cohort of enrolled infants till 12 weeks to measure growth by length and weight of the infant. Results: Through our study we found that all lactating mothers were secreting high levels of AFM1 from their breast milk. Most infants showed below average gain in weight and length during the study period of 12 weeks since enrollment. The growth in length was not different among boys and girls. The gain in weight was not independent of the different categories of growth like average, below average, stationary and declining among infants across the 3 visits of the study period for girls. There existed some relation between poor weight gains across the 3 visits among girls; not boys. Conclusion: The infants started growing well but could not catch-up.Despite high exposures, and poor catch-up, growth parameters were not associated with the levels of Aflatoxins.