Gerson Therapy (PDQ): Health Professional Version

National Cancer Institute clinician-facing evidence summary, fetched directly from NCBI Bookshelf. PMID verified on PubMed directly. It reports no prospective controlled peer-reviewed cancer study and says the evidence cannot support a level-of-evidence analysis; documents Gerson's 1953 malpractice-insurance cancellation and 1958 two-year suspension by the New York County Medical Society rather than a state licensing board; and records the FDA's 1989 ban on injectable crude liver extract after Campylobacter contamination and low-sodium coma in some patients. Authoritative institutional evidentiary-failure source.