I ate nothing but 'healthy' fast food for a week — here’s what happened

America has an obesity problem, but there are more 200,000 fast foods restaurants dotted throughout the country. Customers have been moving towards places with healthier menus and many traditional chains are adding items to address this. I tried eating these "healthy" fast foods for an entire week. I had every meal at McDonald's, Wendy's, Taco Bell, Burger King, Subway, Dunkin' Donuts or Chick-Fil-A.