What did the final months look like for Kelly Clarkson's ex-husband? A lot of questions have surrounded Kelly Clarkson over the past several months due to absences from her talk show and canceled concert dates.

The last five years for Kelly Clarkson have been a period of dramatic change and growth. From her divorce from Brandon Blackstock to moving across the country to start over, she’s been through a massive trial.

Kelly Clarkson abruptly cancelled her Las Vegas shows, announcing that her ex-husband, Brandon Blackstock, was ill. Then, came the tragic news that Blackstock was dead at the age of 48. What was his cause of death?