William Donald Kelley

William Donald Kelley (November 1, 1925 – January 30, 2005) was an American orthodontist who developed "non-specific metabolic therapy," an alternative cancer treatment, now known to be ineffective, which he based on his personal belief that "wrong foods [cause] malignancy to grow, while proper foods [allow] natural body defenses to work."

Kelley received no training in oncology; according to Quackwatch, his ideas are "largely speculative and invalid." His therapy is not only ineffective, Quackwatch notes, Kelley also added prayer and osteopathic manipulations to his treatment regime. According to the center, "findings from a study involving patients with inoperable pancreatic cancer showed a decrease in overall survival and poorer quality of life ... compared to standard gemcitabine-based chemotherapy." Kelley died of a heart attack on January 30, 2005, in Arkansas City, Kansas.