When a cancer diagnosis arrives, most patients and families instinctively look outward — to hospitals, imaging machines, chemotherapy protocols, and surgical suites. This response is rational. Modern oncology has achieved extraordinary things. But as a professor of Korean Medicine at Dongguk University specializing in pathology and oncology, I have spent decades watching what happens after […]
Cancer Cachexia: Why Wasting Kills — and What the Nutritional Model Misses
In Brief Cancer cachexia kills approximately 20–30% of cancer patients directly — not the tumor itself, but the systemic metabolic collapse the tumor drives — making it one of the most underaddressed contributors to cancer mortality. Cachexia is not starvation and cannot be reversed by aggressive nutritional support alone; it is an active catabolic state […]
Sleep, DNA Repair, and Cancer Risk: The Nocturnal Window Most Patients Miss
In Brief DNA repair is not a passive process — it is an active, energy-intensive cellular function that is tightly coupled to the circadian cycle, with the majority of critical repair occurring during slow-wave sleep. Chronic sleep deprivation does not merely impair cognitive function; it directly compromises the DNA repair window that determines whether the […]
The Molecular Cascade of Cancer: Initiation, Promotion, and Where Prevention Actually Works
In Brief Carcinogenesis requires non-lethal genetic damage — mutations severe enough to alter cellular behavior but insufficient to trigger immediate apoptosis — making the cell’s survival machinery the central target of the process. The three-stage model of initiation, promotion, and progression describes not three discrete events but three distinct phases of relationship between the mutated […]
Tumor vs. Cancer: What the Biological Distinction Actually Means
In Brief A tumor is any abnormal mass of tissue formed by excessive cell proliferation; the word “cancer” refers specifically to malignant tumors that have acquired the capacity to invade adjacent tissue and metastasize. The critical biological distinction between benign and malignant tumors is not growth rate or size — it is the cellular loss […]
How Lifestyle Creates the Conditions for Cancer: A Pathologist’s Perspective
In Brief Most cancers that develop in the sixth decade and beyond are not primarily genetic events — they are the cumulative result of decades of lifestyle-induced metabolic dysregulation that progressively compromises the body’s surveillance mechanisms. Chronic psychological stress is carcinogenic not through a single direct mechanism but through the sustained hormonal environment it creates, […]