What is Mad Hatters syndrome. I told my doctor I was taking a commercial omega 3 capsules and was told that?

Question

if they were not murcury free. They could cause mad hatters syndrome.

Answer 1

the expression "mad as a hatter" came from 19th century hatmakers who worked with free mercury in the mfg of hats. Its a neurotoxin, causes brain damage and resultant behavior and thought disorders.