A team of researchers at the University of Limerick are working on a project that could revolutionise fertility treatment by producing human sperm from lab-engineered testicular tissue. This ground-breaking work aims to address the rising problem of male infertility, which has seen sperm counts decrease over the past seven decades. The goal is to create a model that replicates human testicular tissue and is capable of producing viable human sperm. If successful, this could provide a new solution for men with severe, unexplained infertility, those who have undergone unsuccessful surgical sperm retrieval procedures, and childhood cancer survivors whose fertility was damaged by chemotherapy or radiation.