Nutritionist Leyla Muedin discusses the epidemic of low testosterone in men and its associated health risks, referencing a systematic review and meta-analysis published in the Annals of Internal Medicine. She explains the causes of low testosterone, including obesity, lifestyle factors, and certain medications like statins. Leyla also highlights the importance of lifestyle changes in managing chronic diseases and the global movement towards lifestyle medicine, underscored by the recent Doha Declaration advocating for lifestyle medicine as a transformative healthcare approach.