The Court of Appeals of Minnesota, in State v. Saunders (No. C9-95-907, 1996 Mnn. App. LEXIS 60 (Jan. 16, 1996)), held that the statutory offense of practicing medicine without a license was not unconstitutionally vague as applied to a claim involving a farmer who offered a home remedy to cure cancer. The court held that, although Minnesota Statute § 147.081 subd. 3(3) (1994) contains general language and undefined terms, the statute contains sufficient particularity to show ordinary persons what conduct is prohibited, and thereby passes the void-for-vagueness test. The court stated that, according to the statute, while a person holding a license to practice medicine is permitted to engage in a broad range of conduct, those without that license are proscribed from engaging in that same range of conduct.

The defendant, Mr. Saunders, a dairy farmer, claimed that he could cure ill people by injecting an ill person's blood into a cow and then feeding that person the cow's colostrum.