It is said that when God created order, He brought Kamael (Chamuel) into being at the very moment He gave concrete form to the personified attributes of severity, power, and judgment. Possessing both angelic and demonic qualities, Kamael embodies a paradox of good and evil. On the one hand, he is listed among the seven angels who stand before God—an Archangel, symbolizing order, judgment, and divine power. On the other hand, he appears in the form of a leopard-shaped Duke of Hell, identified as the Spirit of Mars, governing war, rage, and destructive energy. Thus, within mystical symbolism, Kamael represents the tension between light and violence, order and destruction.
This antagonistic duality, where divinity and toxicity coexist, is not confined to mysticism or angelology. It is also embedded in every major breakthrough in the history of drug development.
In 1992, American scientist John Eng discovered a compound he named Exendin-4. Structurally similar to the human hormone glucagon-like peptide-1 (GLP-1), Exendin-4 lowers blood glucose levels by enhancing insulin secretion and suppressing appetite. Modern antidiabetic drugs known as GLP-1 receptor agonists all trace their inspiration back to this molecule. What is less widely known is that Exendin-4 was originally isolated from the venom of the Gila monster, a highly toxic lizard native to the arid regions of the southwestern United States and Mexico.
During World War II, mustard gas emerged as one of the deadliest chemical weapons ever developed, named for its mustard- or garlic-like odor. This lethal agent selectively attacks bone marrow, severely damaging the body’s hematopoietic system and causing a dramatic reduction in the number of white blood cells. Leukemia and lymphomas are cancers characterized by the uncontrolled proliferation of blood cells, so if blood cells could be selectively targeted, malignant cells might be destroyed.
Inspired by mustard gas’s potent suppressive effects on bone marrow and white blood cells, Louis Goodman and Alfred Gilman, two pharmacologists at Yale University, secretly began using nitrogen mustard to treat malignant lymphoma in 1942. This marked the first clinical attempt at chemotherapy in human history. Anticancer drugs derived from mustard gas are collectively known as alkylating agents, which inhibit cell division by damaging DNA. Over time, scientists developed improved nitrogen mustard derivatives such as cyclophosphamide and melphalan, many of which remain in clinical use today. Few could have imagined that a chemical weapon designed for war would initiate humanity’s first step toward cancer chemotherapy.
In the late 1950s, Germany developed a sedative named thalidomide, initially marketed worldwide as a drug considered safe even for pregnant women. Soon after, however, a surge of infants were born with severe limb malformations—shortened arms and legs resembling flippers, a condition known as phocomelia. Thalidomide was identified as the culprit, as it was found to inhibit the synthesis of a critical protein. The drug was withdrawn from the market. Yet more than forty years later, in 2008, Japan approved thalidomide once again, this time for the treatment of multiple myeloma. Extensive clinical trials demonstrated that thalidomide showed unprecedented efficacy against bone-marrow cancers, particularly multiple myeloma. For patients suffering from this difficult-to-treat disease with a poor prognosis, thalidomide proved to be nothing short of a medical breakthrough.
Many similar examples appear throughout the history of pharmacology. Nitroglycerin is an explosive, yet also a life-saving treatment for angina. Morphine is a narcotic, but after methylation becomes codeine, a widely used cough suppressant.
It seems that every drug possesses both a “demon pellet” and a poison within it. Like Kamael, it is not that good contains evil, but rather that its very essence includes a violent dimension. As the physician Paracelsus succinctly stated:
“All substances are poisonous; there is none that is not a poison. The dose makes the poison.”
