1. Every junk food supplier knows to load their product with salt
to increase sales.

2. I caution against assuming that ion transport mechanisms in
the intestines are the sole determiner of appetite. Some people
convert absolutely everything they eat into fat. Increasingly,
they are having an operation to remove 80% or so of their
stomach. The original idea was that patients would be physically
incapable of eating enough to make them fat, but it has been
found that most of those patients simply don't feel hungry any
more. Clearly, the stomach plays a significant role in
determining appetite.

"Can't there be change in concentration of ions in intestinal ion
mechanisms due to taking of excess salt?
Anyway, I have quoted above, another role of NaCl/KCl in stomach. More
NaCl/KCl may mean more stomach acid. Can it cause craving for taking
more food?"

I'm not a biochemist or physiologist! just an amateur nutrition student.
Salts, NaCl in particular, cause food cravings in most people - that's
as far as I'll go. It's up to you to take it further.

"Can't there be change in concentration of ions in intestinal ion
mechanisms due to taking of excess salt?
Anyway, I have quoted above, another role of NaCl/KCl in stomach. More
NaCl/KCl may mean more stomach acid. Can it cause craving for taking
more food?"

I'm not a biochemist or physiologist! just an amateur nutrition student.
Salts, NaCl in particular, cause food cravings in most people - that's
as far as I'll go. It's up to you to take it further.