A Chattanooga physician says the Affordable Care Act saved her life, and she’s challenging claims that the Senate can replace Obamacare with something better. She’s the founder of the Chattanooga Sports Institute Center for Health, and an athlete who has finished seven Ironman competitions. But a sudden diagnosis slowed her down. "Two and a half years ago," she says, "I was diagnosed with a very devastating, incurable, chronic vascular disease. I lost, almost lost my entire right leg to that.