Craving salty foods can have various causes, ranging in severity from 'needs attention' to 'very serious'. Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.
Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms. In order to diagnose craving salty foods, we could:
How much do you enjoy salty foods?
Possible responses:→ I dislike salty food / food often tastes too salty
→ I avoid salt when I can
→ It makes no difference / don't know
→ I often like some extra salt
→ I really love/crave salt