“Supernanny” star Jo Frost is battling a “life-threatening” medical condition. The 55-year-old TV personality announced over the weekend she’s been diagnosed with anaphylaxis.

"Supernanny" star Jo Frost is opening up about living with anaphylaxis, which can cause potentially life-threatening allergic reactions.

Jo Frost, the beloved 'Supernanny,' reveals her serious medical diagnosis and calls for greater compassion and respect for those living with health challenges.

"Supernanny" star Jo Frost is opening up about living with anaphylaxis, a potentially life-threatening allergic reaction. "I feel like I'm lucky I'm still here," Frost told "Good Morning America ...