Read the following article and answer the question.

Currently , I ' ve been off fast food for a couple of months , probably for the first time in my life . Partly because I do n't have the money . And also because it would just make me feel horrible , in my head and in my stomach afterwards . I ' m not considering taking on the Vegan lifestyle full on , or protesting against cattle ranches , or only consuming " organic " foods ; right now it 's just sort of in the back of my mind .

Why has the narrator quit on the fast food ?
They are noticing it 's ill effects .