system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 Why does sodium-heavy liquids like pickle juice, chicken noodle soup, or saline hydrate you better than regular water when you're dehydrated, but salt water dehydrates you?
gpt
Because most of the time, when you’re severely dehydrated like that you’re also short on electrolytes so the salt helps. You can’t drink sea water because the salt concentration of salt is so high your kidneys can’t process it and just dump even more water than you’re taking in drinking the salt water making you more dehydrated.

It’s all about the concentration Of the salt.