Holy shit, not only is this guy a college graduate, but studied nutrition. It's pretty stunning to see the kind of info turned up from a 3 minute search engine query read, and know that he likely didn't even bother doing that...

NaBr has a very low toxicity with an oral LD50 estimated at 3.5 g/kg for rats.[6] However, this is a single-dose value. Bromide ions are a cumulative toxin with a relatively long biological half-life (in excess of a week in humans): see potassium bromide.

In this case, over the man's first day at the hospital, he grew worse and showed "increasing paranoia and auditory and visual hallucinations." He then attempted to escape the facility.

All this just from wanting to eliminate all forms/quantities of chlorine from his diet, what a weird story.