A declassified CIA document from February 1951 highlights Soviet research from 1950 that identified biochemical similarities between parasitic worms and cancerous tumors, sparking widespread online outrage over its long concealment.
Key Findings from the Soviet Study
The document summarizes a paper published in the Soviet journal Priroda by Professor V.V. Alpatov, who examined endoparasites living inside host bodies. Researchers noted that both parasites and tumors thrive using anaerobic metabolism, generating energy with minimal oxygen, and accumulate large glycogen reserves for energy storage.
These tissues operate as ‘aerofermentors,’ a term coined by German scientist Th. Brand, allowing survival in low-oxygen environments. Tumors exploit this trait in oxygen-scarce tumor masses with limited blood supply.
Promising Chemical Compounds
Experiments demonstrated that specific drugs target both parasites and tumors effectively. Myracyl D, synthesized in 1938 by German chemist H. Mauss, combats bilharzia parasites and malignant growths. Guanozolo, a guanine-like molecule, disrupts nucleic acid production essential for DNA and RNA in rapidly dividing cancer cells.
Laboratory tests on mice showed tumor tissues responding differently to chemicals like atebrin compared to healthy tissues. Tumors, certain parasitic worms, and specific mollusks proved more sensitive to the right-rotating enantiomer, suggesting inverted molecular receptors.
Shared Biological Traits
Soviet scientists proposed common features including unique antigens, altered purine metabolism, and modified enzyme systems in cell protoplasm. They theorized that chemical shifts in the cell’s internal environment, affecting enzymes and proteins, could trigger malignancy.
Public Backlash and Misinterpretations
Declassified in 2014, the document recently resurfaced online, igniting fury. One X user posted: “The Americans knew. They read it, classified it CONFIDENTIAL, and locked it in a vault for 60 years,” sharing the CIA file. Another claimed: “The CIA knew from 1951 that cancer was parasites.”
However, the document does not claim cancer results from parasites; it only details observed biochemical parallels and compound effects in experiments.
Cold War Context
U.S. intelligence translated and archived the paper amid Cold War concerns over Soviet biomedical advances, potentially relevant to public health and biological defense. Today, tumor metabolism and immune evasion remain key cancer research areas, though tumors differ fundamentally from parasites.
This report provides insight into mid-20th-century explorations behind the Iron Curtain, as scientists sought novel treatment pathways.
