When I was a child, my dad used to say that I should chew at least 30times each mouthful of food. If you chew very well each month hold, it may increase a blood circulation 20% more. And also there is a theory that it might prevent to develop serious illness as it increase digestion fluid more and ease stomach and intestine to digest. According to the theory, human mouth can recognize/ distinguish small size as a micron or solidity as a milligram differences and teeth is one of the crucial part of that. So why not eat slowly and chew well from your next meal!