‘Supernanny’ Star Jo Frost Reveals Life-Threatening Medical Condition

The 55-year-old television personality suffers from anaphylaxis, a severe type of allergic reaction to certain foods.

Jo Frost of "Supernanny" speaks during the Lifetime segment of the 2020 Winter TCA Tour at The Langham Huntington, Pasadena, Calif., on Jan. 18, 2020. David Livingston/Getty Images

Jo Frost, a British television personality and parenting expert who found fame on the reality series “Supernanny,” is raising awareness about life-threatening food allergies.

Frost, 55, took to social media last week to share her battle with food-induced anaphylaxis, a severe allergic reaction of the body’s immune system.