Will the last Obamacare insurer selling policies on the exchanges please turn off the lights before you leave? One of the nation's largest health insurance companies is pulling out of the exchanges in all but a handful of states citing losses exceeding one billion dollars last year. Humana says it will exit all but 11 states next year, further reducing the number of companies willing to sell policies in an environment that guarantees massive losses.  The numbers are just not adding up, as younger, healthier consumers are staying away from the exchanges in droves. The Hill: Humana’s decision to exit “substantially all” of the state exchanges comes the same day that the Obama administration announced it would step in to block a multibillion-dollar merger between Humana and Aetna. Both are among the nation's five biggest health insurers. Another of those top five, UnitedHealth Group, announced earlier this year that it would be pulling...(Read Full Post)