Historical Toxicology (OLD TIMEY POISONS) with Deborah Blum - Ologies with Alie Ward Recap

Podcast: Ologies with Alie Ward

Published: 2025-10-29

Duration: 1 hr 14 min

Guests: Deborah Blum

Summary

Explore the history and science of poisons with Deborah Blum, focusing on the deadly allure of arsenic and other historical poisons, and how forensic toxicology evolved to detect them.

What Happened

Deborah Blum joins Alie Ward to discuss the fascinating world of historical toxicology, particularly focusing on old-timey poisons like arsenic. Blum shares her background in chemistry and journalism, explaining her fascination with poisons as clever chemical compounds that trick the human body. The episode delves into the differences between metallic poisons like arsenic and plant alkaloids such as cyanide, emphasizing the deceptive nature of arsenic as it is tasteless and odorless.

Blum narrates how arsenic was historically used in cosmetics and medicines, making it a popular choice for homicide due to its gradual and undetectable effects. The conversation highlights the evolution of forensic toxicology, starting with the Marsh test in the 1840s, which was the first method to detect arsenic in the human body. The development of this test marked a significant advancement in catching murderers.

The episode also touches upon the cultural perceptions of poison as a 'woman's weapon,' noting that women historically used poison more often as a means of self-defense and empowerment in a patriarchal society. Blum discusses the infamous Aqua Tofana, a poison allegedly used by women in the 17th century to gain freedom from abusive relationships.

Blum brings up the importance of understanding poisons in the context of environmental contamination, particularly with arsenic in groundwater, highlighting its dual role as both a historical murder tool and a modern environmental hazard. The episode examines modern toxicology's ability to detect a wide array of substances, including synthetic opioids and antifreeze, while acknowledging the challenges posed by the vast number of chemicals in use today.

Listeners are introduced to the idea that many fictional portrayals of poison in movies are inaccurate, with Blum expressing frustration at common misconceptions, especially regarding the speed and symptoms of cyanide poisoning. The episode concludes with listener questions, addressing myths about building immunity to poisons and the historical use of poison in resistance movements.

Key Insights

• Arsenic, historically used in cosmetics and medicines, was a popular choice for homicide due to its tasteless and odorless nature, making it difficult to detect before the development of forensic tests like the Marsh test in the 1840s.
• The Marsh test, developed in the 1840s, was the first forensic method capable of detecting arsenic in the human body, marking a significant advancement in forensic toxicology and aiding in the prosecution of murderers.
• Aqua Tofana, a poison allegedly used by women in the 17th century, was reportedly employed to gain freedom from abusive relationships, reflecting the cultural perception of poison as a 'woman's weapon' for self-defense in a patriarchal society.
• Arsenic contamination in groundwater presents a modern environmental hazard, highlighting its dual role as both a historical murder tool and a contemporary public health concern.