text: what is the deal with chewing your food completely? i often hear some centenarians mention that one of the ways they maintained their health was by chewing their food completely. is this true and if so, why does this translate into good health and such longevity? many people eat way too fast. chewing your food thoroughly cause syour mind to trigger and let you know that you  are full. it takes your body about 20 minutes to process when it is full. so, by chewing your food completely and eating slower you are going to consume less becuase your body will know when you have eaten too much. whereas if you eat quickly you are going to overeat.