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Showing posts from September, 2026

Framing the Evidence: L-Arginine and Vitamin C Beyond Pulmonary Rehabilitation

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A new multicenter randomized trial in Thorax provides an interesting signal that may extend beyond COPD . In 98 patients with advanced COPD, chronic respiratory failure, and long-term oxygen therapy, adding oral L-arginine plus liposomal vitamin C to a 28-day pulmonary rehabilitation program produced a greater reduction in fatigue than placebo. The between-group difference in Fatigue Severity Scale score was 0.90 points, exceeding the prespecified clinically meaningful threshold of 0.6. However, objective functional outcomes, including 6-minute walking distance , handgrip strength, and sit-to-stand performance, did not differ significantly between groups. The finding should therefore be interpreted precisely. This is not evidence that L-arginine and vitamin C reverse COPD. Rather, it suggests that part of the fatigue accompanying advanced chronic disease may arise from a systemic vascular and metabolic disturbance that remains modifiable during rehabilitation. The endothelial nitr...

Architectures of the Healthy Mind: Consciousness, Individual Diversity, and the Human Foundation of the AI Age

Introduction. Why the Individual Got Lost — and Why It Matters Now There is a paradox at the center of modern medicine and at the heart of the AI systems now being built to assist it. Both are more powerful than at any previous point in history. Both know more about human beings — their genetics, their physiology, their behavior, their cognition — than any previous generation of clinicians or engineers could have imagined. And yet both tend, in their operation, to lose the one thing that cannot be averaged, categorized, or compressed without remainder: the specific person. This is not a failure of intention. No clinician enters medicine to treat categories rather than people. No AI designer sets out to build a system that serves some human beings well and others poorly. The loss of the individual is not deliberate. It is structural — built into the methods, the metrics, and the models that medicine and AI both depend on. Evidence-based guidelines are derived from populations and applie...

When the Lab Test Replaces the Patient: The Difference Between a Causal Factor and a Causal System

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The analytical triumph of twentieth-century medicine created a recurrent clinical temptation. Once a measurable variable was shown to predict disease or participate in its pathogenesis, that variable gradually began to substitute for the disease process itself. Cholesterol, blood pressure , glucose , and amyloid transformed modern medicine and remain indispensable. Yet they also encouraged a subtle conceptual shortcut: treating an isolated number became easier than understanding the biological system in which that number acted. The problem is not that these biomarkers are irrelevant or uncausal.  ApoB-containing lipoproteins , elevated blood pressure, chronic hyperglycemia, and amyloid pathology became central measurable targets of modern medicine and remain indispensable to clinical practice. The deeper problem lies elsewhere: a causal factor is not identical to a causal system. A causal factor is not the whole disease Atherosclerosis provides the classical example. A century o...

Beyond standard guidelines: why the fibrillating heart needs exercise

The recent findings from the NEXAF trial presented at the ESC Congress 2026 —demonstrating a 45% reduction in arrhythmia burden and a significant drop in hospitalizations through structured exercise—have finally prompted mainstream cardiology to endorse exercise programs for atrial fibrillation . Yet, conventional guidelines still frame physical activity through an overly cautious lens, treating the irregular heart as an inherently fragile pump that must be strictly slowed and protected . A much deeper physiological foundation exists . Physical exercise is not merely an adjunct lifestyle tool to reduce arrhythmia recurrence; it is a fundamental test and protector of the heart’s innate rate-adaptive reserve . Crucially, the physiological proof that rate-adaptive reactions in atrial fibrillation remain intact under physical stress was demonstrated nearly a quarter century ago in the clinical studies led by  my research team , as detailed in  The Silent Adaptation . When c...