No, salt actually increases saliva production at certain concentrations.
Based on the provided reference, salt stimulates salivation when the concentration is high enough:
- The average resting salivary flow rate is about 1 ml/min.
- This rate increased to 4 ml/min and 6 ml/min when gums containing low and high salt concentrations were used, respectively.
- Salivation stimulation by salt occurs above the taste threshold of 20 mM NaCl.
Therefore, salt does not decrease saliva; it can actually significantly increase saliva production. The increase in salivation happens when salt concentrations are above a certain level that can be tasted.
