The three pairs of major salivary glands are:
Saliva helps us fight off bacterial infection. But this defense is only really efficient if you chew your food well so as to create a larger surface area of food on which the saliva and enzymes can act against food-borne bacteria.
Many obese people have noted and persevered with our non-invasive and natural chewing disciplines. Their positive results are proving beyond any doubt that they could improve their general health and lose excess fat without dieting!