Ads for prescription drugs appeared 5 million times in just one year, capping a recent surge in U.S. medical marketing, a new analysis found. The advertisements for various medicines showed up on TV, newspapers, online sites and elsewhere in 2016. Their numbers soared over 20 years as part of broad health industry efforts to promote drugs, devices, lab tests and even hospitals. The researchers estimated that medical marketing reached $30 billion in 2016, up from $18 billion in 1997.