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Three days of call. Three dozen consults. Three cups of coffee barely holding the Clinical Etymologist together.

This is the story of what happens when exhaustion meets imagination — and a lactate lesson hidden inside a Matrix dream.

In this episode of The Clinical Etymologist, we blur the lines between reality and dream, weaving medicine, etymology, and a touch of cinema into one teaching pearl.

From Enterococcus articles to Neo’s slow-motion battles, from urine bottles in orbit to the hidden twists of D-lactate, join me as we discover how even fatigue can spark unforgettable teaching moments.

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The momentous discovery of Cobalamin 77 years ago made a macrocytic impact on medicine, saving millions of lives from their pernicious fate. In celebration, we take a subacute and combined degenerative dive into the world of Vitamin B12 deficiency.

From raw liver cures to Nobel Prizes, from cobalt atoms to collapsed gait, this episode traces the fascinating history and clinical nuance of a vitamin that does far more than make red cells. Join Dr. Kim and a curious medical student as they unpack the story behind megaloblastic anemia, nerve damage without anemia, and why B12 is not just a number to tick off — but a diagnostic lens into aging, memory loss, and evolution itself.

By the end of this episode, you’ll never look at falls, forgetfulness, or a “normal CBC” the same way again.

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The previous episode Letting Go, Gently was a heartfelt reminder of the human side of medicine, a glimpse into one of those moments that shape us as not just health care providers but also healers.

Sometimes, we need to pause to reflect as physicians.

Today, we pivot back to the bedside, to the Emergency Room of a teaching hospital where a timid second-year student, a brand name, and a routine clinical checkbox unexpectedly converge into a tale that weaves pharmacology, etymology, and a dash of history — a story worth telling… and sharing.