Allan Pacey

Professor Allan Pacey is an expert in male fertility from the University of Manchester, while Adith Arun is a Yale researcher specializing in testosterone data. They dissect a controversial claim about declining sperm counts and testosterone levels among U.S. teenagers compared to older men. Pacey highlights the complexities in sperm quality studies, while Arun reveals how changes in testing methods have distorted testosterone trends. Both warn against misinterpretation leading to unnecessary treatments that could harm fertility.