Expert opinion can give weight to your argument. But don’t rely on experts to make your argument for you. Construct your argument in your own words and, when appropriate, cite the judgment of an authority in the field to support your position.

Both medical experts and policymakers recognize that solutions might come not only from a laboratory but also from policy, education, and advocacy. Indeed, a handbook designed to educate doctors on obesity recommended a notably nonmedical course of action, calling for “major changes in some aspects of western culture” (Hoppin & Taveras, 2004, Conclusion section, para. 1).