If you think about it, the three most well-known cases about the use of life prolonging measures were the court battles concerning Karen Ann Quinlan, Nancy Beth Cruzan and Theresa Marie Schiavo. All three were young women in the 20s when they became vegetative and had to rely on a ventilator and/or feeding tube to survive.
I'm pleased to have been a contributor to this timely article in the Huffington Post about the need for Advance Care Planning at any age: "I'm young and healthy: Why do I need an Advance Healthcare Directive?", written by Monica Mizzi.
Please consider the value of planning ahead for medical decision making--no matter what your age.