The Biological Nature and History of Cancer
At its core, cancer is a disease caused by the uncontrolled growth of a single cell. This growth is unleashed by mutations in the very genes that regulate life. In a healthy body, genetic circuits manage cell division and death to maintain balance. In a cancer cell, these circuits break, creating a version of the self that cannot stop growing and dividing.
The challenge of treating this condition lies in its biological intimacy with the host. Malignant growth and normal growth are genetically intertwined, meaning the genes that drive cancer are simply distorted versions of the genes that perform vital cellular functions. As human life spans increase, the accumulation of these genetic mutations becomes nearly inevitable. Cancer is essentially a quest for immortality occurring within our own bodies, flourishing and adapting at the cost of the living organism.
The first recorded encounter with cancer dates back to approximately 2500 BC in the writings of the Egyptian physician Imhotep. In a surgical treatise remarkably free of superstition, Imhotep described bulging masses in the breast that were cool and hard to the touch. When addressing the therapy for such cases, his conclusion was brief, stating that there was no treatment. Following this admission of impotence, cancer largely vanished from medical records for two thousand years.
The rarity of cancer in antiquity was not due to its absence, but rather to the brevity of human life. In ancient societies, people were consumed by acute infections like cholera, smallpox, and tuberculosis long before cancer could take root. Civilization did not create cancer, but by eliminating other killers and extending longevity, civilization allowed cancer to emerge from the background. Physical evidence of this ancient struggle remains preserved in rare archaeological finds, proving that the disease has always lurked within the human frame.
In the absence of microscopic understanding, ancient physicians turned to metaphors of fluid balance to explain the disease. The Greek physician Galen proposed that cancer was caused by an accumulation of black bile, a viscous, systemic fluid that supposedly congealed into tumors. This theory suggested that cancer was a deep-seated bodily dysfunction rather than a localized problem, which created a profound skepticism toward surgery that lasted for over fifteen centuries.
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