a person produces enough saliva to fill 2 average size swimming pools during their lifetime
a healthy person per day produce saliva 0.75 to 1.5 litres per day ( while it is generally accepted that during sleep the amount drops to almost zero )
Did You Know ?
saliva allows the food bolus to be passed easily from the mouth into the esophagus.
it also helping to prevent dental plaque build-up on the teeth and washing away adhered food particles.
Saliva is very important in the sense of taste. It is the liquid medium in which chemicals are carried to taste receptor cells.
Some other facts about Saliva
Many birds in the swift family, Apodidae, produce a viscous saliva during nesting season to glue together materials to construct a nest.