In an effort to combat childhood obesity, the nation's school lunch and breakfast program will see more fruits, veggies, whole grains and nonfat dairy and less sodium and fat.

Starting July 1, the U.S. Department of Agriculture will implement new nutritional standards for schools -- the first major revisions the agency has made to the federal program in more than 15 years.

Related Content

The new menu will include only 100 percent fruit or vegetable juice and elimination of most trans fats. Bread and rice must be whole grain, and only 1 percent fat or nonfat milk will be allowed.

For the first time, there will be a set standard of minimum and maximum calories allowed per meal.

The nutritional standards will change nutrient-based, like the amount of carbs or sodium, to food-based, such as specific servings of meat and vegetables.

The menu changes will be phased in over the next three years.