Cigarettes were once ‘physician’ tested, approved

 https://www.healio.com/news/hematology-oncology/20120325/cigarettes-were-once-physician-tested-approved

For a long time, physicians were the authority on health. Patients trusted in their doctors' education and expertise and, for the most part, followed their advice. When health concerns about cigarettes began to receive public attention in the 1930s, tobacco companies took preemptive action. They capitalized on the public’s trust of physicians in order to quell concerns about the dangers of smoking. Thus was born the use of physicians in cigarette advertisements