Aetna

Plenty of companies are working on better engines to search the Web for health information. Now insurance heavyweight Aetna is making it personal.

The company is rolling out a search service that takes into account a member’s personal health information, including past diagnoses and health-plan details.

The loud message comes from one company after another: Surging health-care costs for retired workers are creating a giant burden. So companies have been cutting health benefits for their retirees or requiring them to contribute more of the cost.