Yes, lemon increases saliva production.
Lemon, due to its citric acid content, acts as a sialogogue, a substance that stimulates the secretion of saliva. When you taste something sour like lemon, your salivary glands are triggered to produce more saliva. This increased saliva flow is a natural response to help neutralize the acid and protect your teeth. Studies have shown that lemon juice can significantly increase salivary flow, particularly in the initial minutes after consumption, more so than some other substances like yogurt. While yogurt may sustain saliva production over a longer period, lemon provides a more immediate and potent boost.
