Hi,
I'm certainly no doc but what I do know:
Too much sodium chloride (normal salt) is bad as it is related to carviovascular disease i.e. heart attacks and strokes. This is not normally related to type 2 diabetes. In the latter case too much refined sugar is the main culprit.
Experts say 6 grams of sodium choride (normal salt) is the daily recommended maximum for an adult. If you were very sweaty (for whatever reason, e.g. high temps or lots of excercise) you could probably take more.
To put 6 grams in perspective the average slice of bread (brown or white) contains half a gram so 12 slices a day would put you at the limit without eating anything else.
Another example, a tin of chunky chicken and veg soup from the supermarket contains about 2.2 to 2.4 grams of salt.
I'm quite confident my curries and dhals only contain about half of the salt the supermarkets put in their ready meals curries, and I usually eat pillau rice with my curries that has virtually no salt.
The lo-sodium salts use a sodium and potassium chloride mixture but potassium chloride has its own health risks and too much will stop your heart dead! It is in fact the 3rd drug administered in lethal injection executions so I'll stick to normal salt and just watch the quantities.