Don't know ...
But my doctor has suggested that I suck on some sour candies once or twice a day to keep saliva flowing. It does slow down with age. If it gets really sluggish, stones may form in the ducts.
I can tell when mine are getting slow again, because the glands at my jaw under the ear seem to enlarge.
Sometimes I can get the saliva to flow by just thinking about sour things now!
(caffeine will dehydrate you and so will alcohol--and both can cause dry mouth)
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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