Recent research. Indicates that stress may be bad for you only if you believe it's bad for you. Your attitude and response to it are important. See the full information at http://www.Ted.Com/talks/kelly_mcgonigal_how_to_make_stress_your_friend.Html.
Possible. People can die from overwhelming stress, that could lead to large amounts of Adrenalin released, elevated blood pressure, and cardiac arrhythmia and death. Stress can cause physical damage, via stress hormones, obesity, arthritis, elevated blood pressure and cholesterol, lead to vascular and heart damage and premature death. Best to modify all your stressors.