For centuries, mercury was treated as both a medical marvel and a cure-all. From syphilis treatments and calomel pills to teething powders and household antiseptics, this episode of Hidden Med follows how one of the strangest elements on Earth became deeply embedded in medicine—and why it took so long to recognize when the cure was doing more harm than the disease.

They were doctors, researchers, and scientists—but during World War II, they treated human beings as experiments. From Auschwitz to Japan’s Unit 731, this episode of Hidden Med tells the stories behind some of the war’s most disturbing medical experiments, the people who were subjected to them, and the legacy they left on the ethics of medicine today.

Once hailed as a breakthrough in psychiatry, the lobotomy promised to treat severe mental illness by changing the brain itself. This episode of Hidden Med traces how the procedure rose to medical fame, the patients whose lives were permanently altered, and what its history reveals about the risks of treating the brain before fully understanding it.

They were told it was safe. Some were even told it was beautiful. From the young factory workers who went home glowing with radium dust to beauty products that promised perfect skin with arsenic, this episode uncovers the dangerous side of the era’s obsession with beauty and innovation—and the women who paid the price.

You know those purple wipes in your cabinet? Those Lysol wipes? Well, did you know that Lysol was once advertised as a feminine hygiene product? Listen in as I take you through the hidden medical history of Lysol.