Normal 0 false false false MicrosoftInternetExplorer4 Normal 0 false false false MicrosoftInternetExplorer4 Old age can hit animals in the gut. That’s where elderly fruit flies experience a signaling imbalance that disrupts renewal of the gut wall, new research shows. The discovery could help scientists understand why the body’s organs malfunction in old age, and why intestinal cancer is so common among older people.