The College of Science at the University of Basra organized a scientific lecture on antibiotic resistance and microbial biomass. The lecture, presented by Dr. Alia Ahmed Abdul Sattar, clarified new concepts regarding antibiotic resistance and its interaction with the microbial biomass within the digestive system. The lecture discussed the issue of antibiotic misuse and the increasing mortality associated with this alarming health phenomenon. The lecture aimed to demonstrate that the effects of these antibiotics extend to the microbial biomass, which is the first line of defense against these drugs, in addition to their impact on pathogens causing various types of diseases, whether bacterial, viral, or fungal. It was shown that 70% of current diseases have their roots in this microbial biomass. The lecture also addressed the important global issue of antibiotic resistance, which has worsened in recent years due to the misuse of these antibiotics, and that Iraq is not immune to this widespread phenomenon. The lecture concluded that antibiotic resistance is a growing phenomenon, and Iraq is within the circle of this growth. It also noted that antibiotics cause instability in the microbial biomass of the digestive system. The instability of these microorganisms will contribute to hormonal imbalances and disruptions in the concentrations of minerals and vitamins, which will negatively affect the various organs of the body, leading to the emergence of multiple diseases.