Tens of thousands of Iowans could be left with no health insurance options next year, after the last carrier for most of the state says it likely will stop selling individual policies here. Minnesota-based Medica suggests instability in the market means it's close to following Aetna and Wellmark Blue Cross-Blue Shield deciding not to sell policies in Iowa next year. Aetna and Wellmark say they’ve lost tens of millions of dollars on the policies, largely because they covered too many older Iowans with chronic health problems and not enough young, healthy people. The pull-outs wouldn't affect Iowans who get insurance from an employer or a government program, like Medicare or Medicaid. The carriers’ exit could leave more than 70,000 Iowans who buy their own coverage without any options for 2018.