The paradox of a toxic chemical marketed as a cancer cure

Health · Published 19 October 2026 Swipe more like this →

In short: Hydrazine sulfate is a potent industrial chemical used in rocket fuel and metal refining. Yet, it has been marketed as a dietary supplement to treat cancer-related weight loss. This creates a stark tension between its known chemical toxicity and its controversial role in alternative medicine.

Hydrazine sulfate is a white, water-soluble solid that serves various industrial purposes, including soldering, metal extraction, and as a catalyst in fiber production. However, its chemical profile is hazardous; it is classified as toxic if swallowed, inhaled, or in contact with skin. It is also a known skin sensitizer, a corrosive agent capable of causing severe eye damage, and a suspected carcinogen. Because it is non-combustible but can decompose into toxic fumes when heated, it requires strict storage in refrigerators and specific protective gear, such as Tyvek-type clothing and NIOSH-approved respirators.

Despite these dangers, the compound gained notoriety in the 1970s as a potential cancer treatment. U.S. physician Joseph Gold proposed that because cancer cells rely heavily on glycolysis for energy (the Warburg effect), inhibiting the body's reverse process—gluconeogenesis—might treat cancer-related anorexia and cachexia (muscle wasting). Gold theorized that hydrazine sulfate could irreversibly inhibit the enzyme phosphoenolpyruvate carboxykinase (PEP-CK), potentially starving the tumor of energy while preserving the host's health.

Clinical evidence, however, does not support its use as an anticancer agent. Randomized clinical trials have shown that hydrazine sulfate does not shrink or eliminate tumors. While some studies reported it might help with appetite and weight loss in cancer patients, the U.S. Food and Drug Administration has never approved it as safe or effective for any medical condition. Scientists remain concerned about its safety, noting that many hydrazine-related compounds are known to be toxic to humans and animals.

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