The Surprising Science of Saliva

On average, you produce and swallow 1 to 2 liters of saliva every single day. It's not just water, though; it's a concoction of bacteria, enzymes, dead cells, and a secret ingredient called haptocorrin. This unique substance acts like a bodyguard for Vitamin B12, binding to it to protect it from being destroyed by strong stomach acid before it can be absorbed in the intestine. Also, introverts tend to produce more saliva than extroverts!