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Is The Jansenist Convulsionnaires of Saint-Medard a real miracle?

Assessed by Miracles Jar AI · 2026-06-10

ExplainedIt happened — nature explains it

Miracles Jar rates The Jansenist Convulsionnaires of Saint-Medard Explained. It happened — and nature accounts for it. Two scales drive that verdict: how extraordinary it would be if it truly happened — naturally explained — and how strong the evidence is — well documented.

How miraculous, if true

Naturally explained

Does it break the laws of nature — if it really happened?

How strong the evidence

Well documented

Is there evidence it's true?

Read the full investigation — the evidence, the sources, and how we weighed it

Common questions

Is The Jansenist Convulsionnaires of Saint-Medard real or fake?
Miracles Jar's verdict is Explained: it happened — nature explains it. It happened — and nature accounts for it. On the evidence, the record is well documented.
Has The Jansenist Convulsionnaires of Saint-Medard been explained?
The event appears to have happened, but a natural explanation accounts for it — the leading account is expectation, suggestion & the placebo response. It reads as remarkable rather than miraculous.
What is the evidence for The Jansenist Convulsionnaires of Saint-Medard?
Miracles Jar weighs 3 sources for this case. Points that support the claim: Hundreds of sworn depositions collected by Jansenist lawyers and sympathetic physicians documented specific cures with named witnesses; and Hostile witnesses (royal officials, anti-Jansenist clergy) also attested to extraordinary physical phenomena, reducing the bias from sympathetic reporting. Points that cut against it: The cemetery was closed by royal decree in January 1732 but the convulsions continued in private, and the practices escalated to extreme self-mortification and theatrical 'secours' (ritual beatings); and Hume's argument: no set of testimonial evidence can outweigh the uniform human experience against miracles; the best explanation is always mass delusion or fraud.
What is the natural explanation for The Jansenist Convulsionnaires of Saint-Medard?
The leading natural account is expectation, suggestion & the placebo response. Belief produces real, measurable change in the body. The relief can be genuine while the cause stays entirely natural. The full breakdown shows where that explanation holds — and where it stops.
When and where did The Jansenist Convulsionnaires of Saint-Medard happen?
It is said to have occurred 1727-1740s in Saint-Medard cemetery, Paris, France.

More questions like this

Miracles Jar weighs each claim two ways — how extraordinary it would be if it truly happened, and how strong the evidence is — so you can judge it for yourself. See the full case → Or browse every verdict →