Katie Thurston is opening up about her ongoing battle against breast cancer and how it is impacting her mentally and emotionally. "I've been struggling with my health lately," she admitted via her Instagram Story on Friday, November 14. "Slow to recover. We thought maybe it was the air vents since we're using our heaters more. As renters, we have no idea how long it's been since they've been cleaned, if ever." She continued: "Today the heating units are being cleaned professionally and OMG I think this was the culprit.