Actress Laura Prepon insists on bringing in her own packed lunches while working on Tv and movie sets because she suffers from so many food allergies.

The former That '70s Show star has to stick to a very restricted diet to keep her from falling ill, so she makes sure to avoid all onset craft services that may contain wheat, gluten and dairy.

She tells People magazine, "I cook all my own food and bring it with me every day because I have so many food allergies. Even if I have to get up at five in the morning, I make time or else I'll be sick all day."