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Mysterious French Alps ALS Cluster Baffles Scientists

16 ALS cases in a small French village have scientists scratching their heads. Could local mushrooms be the cause?

In the foreground of this edited image there are mushrooms.
In the foreground of this edited image there are mushrooms.

Mysterious French Alps ALS Cluster Baffles Scientists

A mysterious cluster of ALS cases in the French Alps has baffled scientists. First identified in 2009, the small village of Montchavin saw 16 cases, significantly higher than usual. While no genetic link was found, consumption of local mushrooms has raised eyebrows.

Investigations revealed that six patients had consumed local mushrooms, including species like Boletus and Russula. These mushrooms can contain gyromitrin, a toxic compound affecting kidneys, central nervous system, and DNA. However, no definitive link to ALS has been proven.

Most ALS patients share a slow acetylator NAT2 gene phenotype, which increases nerve cell damage risk by allowing toxins to linger. In Montchavin, locals consume the false morel mushroom, banned from sale due to its 'rejuvenating' properties and taste, despite knowing its illegality.

The exact cause of the French Alps ALS cluster remains unclear. While environmental factors, including mushroom consumption, are suspected, no definite link has been established. Further research is needed to understand this mysterious outbreak.

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