William Tyler Jarvis (October 19, 1935 – March 1, 2016) was an American health educator and skeptic.
In 1973, he obtained a PhD in health education from the University of Oregon.
[2][3] In 1976, Jarvis cofounded the National Council Against Health Fraud and was president from 1977 until his retirement in 2000.
[2] He was a noted critic of alternative medicine and was known for exposing quackery.
[2] He described chiropractic as "the most significant nonscientific health-care delivery system in the United States.