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WASHINGTON (AP) - Walmart is putting special labels on some store-brand products to help shoppers quickly spot healthier items. Millions of schoolchildren are helping themselves to vegetables from salad bars in their lunchrooms. Kids' meals at Olive Garden and Red Lobster restaurants automatically come with a side of fruit or vegetables and a glass of low-fat milk.

These and other changes were the food industry's response to the anti-childhood obesity campaign Michelle Obama launched three years ago. Other changes are in store.

Some people criticized the effort as unwanted government intrusion while nutrition advocates credited the first lady with raising awareness and bringing a range of interests to the table.

Mrs. Obama heads out Wednesday on a two-day tour to promote the "Let's Move" initiative, with stops in Mississippi, Illinois and Missouri.