Sodium consumption has always been an archived as being bad for overall health. However recent studies conducted by Institute of Medicine are neither harming nor helping the health of any individual.
Within this study, there was no significant evidence proving that there is a correlation between elderly consumption of sodium and mortality rates.
It is recommended that elderly maintain a <2300 mg/d level of consumption on a daily basis. Since there isn’t glaring statistics that require one to limit their intake of salt. It is advised that elderly keep a conservative handle on their sodium intake.
Here are links to the Institute of Medicine studies and other resources to further your understanding:
Source for photo: https://www.pexels.com/search/salt/ (photo is reusable)