Veterinarian and naturopathic doctor Joel Wallach believes that a deficiency of the minerals vanadium and chromium causes diabetes, according to his website. A blog post on the site also attributes U.S. diabetes rates to high-fructose corn syrup. The physician-owned website Quackwatch characterizes Wallach as associated with "dubious" activities.
Wallach is the founder of the dietary supplement Youngevity, according to the supplement's official website. Youngevity is distributed by network marketing, also known as multi-level marketing. Wallach claimed in a 2013 Walla Wall Union-Bulletin article that he does not earn money from the sale of the company's "nutritional products." Wallach's current focus is advocacy of vitamin and mineral supplementation for preventive health care.
Wallach's doctorates are in veterinary medicine and naturopathic medicine. Naturopathic doctors are not recognized as physicians by the American Medical Association. In 2013, the Walla Walla Union-Bulletin published Wallach's defense against a critical column by Dr. Don Casebolt. In his article, Wallach claims to have cured a man misdiagnosed eight years earlier with Alzheimer's disease of dementia in one week using thiamine supplementation.
Quackwatch describes how two colloidal mineral companies ended business relationships with Wallach in the 1990s after he received negative publicity for numerous questionable or inaccurate statements. Quackwatch also cautioned about possible risks of colloidal mineral supplementation.