Ya that article @readalot was pretty convincing, not gonna lie lol. And saline given IV will hydrate a person, so ur probably right, table salt in water will probably hydrate someone just as well as sea salt in water. There’s definitely something to table salt that will cause negative effects in the body tho, and salt in the forms of Celtic sea salt or redmonds real salt will improve overall health, in moderation. Maybe it’s how table salt is processed. Dr, Brownstein talks about it very briefly at 12:30 into this vid