You may have a condition like Parkinson's disease that makes it hard for you to chew or swallow. Or you might have a critical illness like cancer and lack the strength to eat enough to stay healthy. Use and Care Tubes can deliver food in different ways. Some use a pump or syringe to push the food, while others rely on gravity. Your home care provider -- nurse, dietitian, or other helper -- will show you how to use and care for it.