As new policies to prevent childhood obesity are implemented, it is important that those policies be evaluated to (1) support further action where success can be demonstrated; (2) ensure that policies that fail to act in the intended manner are reconsidered; and particularly (3) assess any unintended adverse consequences. As new evidence emerges, it will be important to reexamine our policy recommendations and make any necessary revisions. Thus it is essential to act aggressively based on what is known now while putting in place the necessary processes for research and policy evaluation to ensure that action can be taken even more wisely and effectively in the future.

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