Long commutes have been proven to cause health problems, a new report states. University of California Irvine has been compiling data for three decades and has found that those who drive in long commutes for several years will suffer from higher blood pressure and more illnesses. The longer the commute, the worse the health problems. Another study at Colorado State tested the correlation between long commutes and anger. It showed that sitting in the car for long periods of time or encountering bad drivers on the road increases anger in people.