During an interview about the movie Fed Up, which I executive produced and narrated, I was asked by Andrew O’Hehir of Salon.com if I was an activist. I demurred at the suggestion, saying instead I was a strong feminist but never really thought of myself as an activist per se. A few days later, I decided to look up the true definition of the word “activist” (thank you, dictionary.com). It’s defined as “a vigorous advocate of a cause, especially a political cause.” So now I’d like to reconsider my answer: maybe I am an activist. But I don’t think our children’s health is a political issue. This shouldn’t divide us—it should unite us.