Given your doctor's diagnosis, Oakleaf in previous threads, your salt need is very specific to you.

On the opposite side my mother was advised by a Western trained Chinese-speaking doctor in Toronto (therefore Canadian medical doctor like my sister), to severely cut back on her salty soy sauce intake. This was 15 years ago. It is salty which means dear mother should not have olives from brine either nor miso. Miso is high salt content. Period. It's not the soy I'm objecting to, very high salt content. Ok like once a month, not several times per week to have lots of miso.

So tough to get totally organic soy sauce.