Hi George, my curries usually contain about a quarter of a teaspoon of salt per person which is about 1.5 grams.
You'll find a tin of soup from any supermarket can be upto 2.4 grams!
The other thing is the oil. Recently I've switched from rice bran oil to Filippo Berio Mild & Light Olive oil as sold by Sainsburys for about 5 quid a litre. You really can't taste the olives in this stuff, I'm well impressed and use it for nearly all frying duties. Apart from the salt and oil curry is good for you

Cheers,
Paul