Physicians may be more stressed than ever — one recent survey found that half were thinking about hanging up their stethoscopes for good. New research continues to demonstrate the demise of doctors, with burnout levels jumping dramatically over just a three-year span.

According to researchers at the University of California, Riverside School of Medicine, physician burnout increased from 45.5% to 54.4% between 2011 and 2014. The researchers say doctors aren't more depressed or exhausted by their home life, but rather at their jobs.

Drs. Andrew G. Alexander and Kenneth A. Ballou isolated three factors for physician burnout, according to their research:

The traditional doctor-patient relationship has been dwarfed by the relationship between health insurance providers and patients, with companies standing in the way of fast and appropriate treatments ordered by physicians.