This is very interesting when thinking about the known link to higher Parkinsons/Alzheimers risk for people that are exposed to fungicides / biocides. Gut bacteria synthesize plenty of vitamins for the body, so it's not far-fetched to think that killing off a fraction of your gut biome due to exposure to these substances will lead to vitamin deficiencies and neurological problems. There are studies that show transplanting gut bacteria from healthy people can alleviate some motor symptoms of Parkinsons [1]. So take good care of your gut bacteria!

1: https://www.parkinsons.org.uk/news/gut-bacteria-transplant-m...