UnitedHealth Group is the latest company to detail the hit its business will absorb from the health care overhaul.

UnitedHealth Group Inc.'s projections for earnings and revenue growth next year fall well short of Wall Street's expectations for the nation's largest health insurer.

Ominous warnings about Medicare Advantage plans have sounded for more than a year now.

Aetna's third-quarter net income rose 4 percent, fueled in part by enrollment and revenue gains from a multi-billion-dollar acquisition the health insurer completed earlier this year.

Insurers, employers and individuals are shopping around for health care as they try to tame rising health care costs.

WellPoint Inc.'s third-quarter earnings fell 5 percent, but the nation's second-largest health insurer's results topped Wall Street expectations.

UnitedHealth Group Inc.'s third-quarter earnings inched up 1 percent in a rare performance that failed to trump Wall Street expectations.

The health care overhaul is expected to help millions of uninsured obtain coverage, but that assistance has limits.