Although gum is not technically a food to be 'de-mythed', it is chewed and occasionally swallowed. It is true that gum cannot be digested the way food is in the stomach. Gum is composed of synthetic or natural materials (the gum resin or bulk) and other flavorings and sweeteners to enhance its appeal. Although the body can absorb the sweeteners and sugars, the resin remains undigested. Peristaltic movements, or wave-like muscle movements, do a good job on pushing the gum resin through the gastrointestinal (GI) tract. Although swallowing large amounts of gum can create constipation and GI distress, the gum's lifespan in the gut will not last seven years and will end its quick journey during a trip to the bathroom.