Inside The 400-Year-Old Mystery Of What Caused The Salem Witch Trials

Published August 20, 2023
Updated October 10, 2024

Hallucinogenic Fungi: One Of The Strangest Possible Causes Of The Salem Witch Trials

Ergot On Rye

University of Hawaii Ergot, a fungus sometimes used to create LSD, can be found on rye and wheat under the right conditions.

In the 1970s, a truly wild theory about the cause of the Salem witch trials took off: hallucinogenic fungi. It might sound far-fetched, but the fungus ergot can be found in rye and wheat under the right conditions.

Known to cause convulsions, hallucinations, and pinching sensations, this fungus is now sometimes used to create LSD. But it may also offer an explanation for the symptoms of people who were “bewitched” in Salem.

First introduced by Linnda Caporeal, this theory posits that ergot poisoning may have caused the bizarre physical afflictions associated with being “bewitched.” After all, many of the symptoms of ergot poisoning were quite similar to what was happening to the girls.

Interestingly enough, the weather conditions in Salem during the winter of 1691 to 1692 were just right for ergot to grow. Plus, studies on ergot poisoning have found that children are the most susceptible to its effects.

But is it really possible that something like ergot poisoning could have caused the Salem witch trials? It’s no wonder why this theory is one of the most controversial — and also one of the most fascinating.

Ultimately, we may never know for sure what caused the Salem witch trials. But there’s no question that this strange piece of American history remains just as curious today as it was centuries ago.


After learning about the potential causes of the Salem witch trials, take a look at the werewolf panic that once swept through Europe. Then read about the worst witch trials of all time.

author
Jaclyn Anglis
author
Jaclyn is the senior managing editor at All That's Interesting. She holds a Master's degree in journalism from the City University of New York and a Bachelor's degree in English writing and history (double major) from DePauw University. She is interested in American history, true crime, modern history, pop culture, and science.
editor
Maggie Donahue
editor
Maggie Donahue is an assistant editor at All That's Interesting. She has a Master's degree in journalism from Columbia University and a Bachelor's degree in creative writing and film studies from Johns Hopkins University. Before landing at ATI, she covered arts and culture at The A.V. Club and Colorado Public Radio and also wrote for Longreads. She is interested in stories about scientific discoveries, pop culture, the weird corners of history, unexplained phenomena, nature, and the outdoors.
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Anglis, Jaclyn. "Inside The 400-Year-Old Mystery Of What Caused The Salem Witch Trials." AllThatsInteresting.com, August 20, 2023, https://allthatsinteresting.com/salem-witch-trials-causes. Accessed February 20, 2025.