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LOS ANGELES, CA - JULY 24:  Fast-food restaurants signs line a street July 24, 2008 in the South Los Angeles area of Los Angeles, California. The Los Angeles City Council committee has unanimously approved year-long moratorium on new fast-food restaurants in a 32-square-mile area, mostly in South Los Angeles, pending approval by the full council and the signature of Mayor Antonio Villaraigosa to make it the law. South LA has the highest concentration of fast-food restaurants of the city, about 400, and only a few grocery stores. L.A. Councilwoman Jan Perry proposed the measure to try to reduce health problems associated with a diet high in fast-food, like obesity and diabetes, which plague many of the half-million people living there.  (Photo by David McNew/Getty Images)
LOS ANGELES, CA - JULY 24:  Fast-food restaurants signs line a street July 24, 2008 in the South Los Angeles area of Los Angeles, California. The Los Angeles City Council committee has unanimously approved year-long moratorium on new fast-food restaurants in a 32-square-mile area, mostly in South Los Angeles, pending approval by the full council and the signature of Mayor Antonio Villaraigosa to make it the law. South LA has the highest concentration of fast-food restaurants of the city, about 400, and only a few grocery stores. L.A. Councilwoman Jan Perry proposed the measure to try to reduce health problems associated with a diet high in fast-food, like obesity and diabetes, which plague many of the half-million people living there.  (Photo by David McNew/Getty Images)

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