One year after UnitedHealthcare's CEO was shot and killed , the crisis in U.S. health care has gotten even worse — in ways both obvious and hidden.

People increasingly can't afford health insurance . The costs of both Obamacare and employer-sponsored insurance plans are set to skyrocket next year, in a country where health care is already the most expensive in the developed world.

Yet even as costs surge, the companies and the investors who profit from this business are also struggling financially . Shares in UnitedHealth Group, the giant conglomerate that owns UnitedHealthcare and that plays a key role in the larger stock market, have plunged 44% from a year earlier. (It was even worse before a rally in UnitedHealth shares on Wednesday.)

"UnitedHealth's reputation in the

See Full Page