07/24/2026
Mercury was the exciting answer. A hematocrit of 56 was the correct one.
Her metabolic testing was the kind you'd frame and hang on the wall.
Mitochondrial function moved from a clear limitation to excellent, HRV climbing toward optimal, fat-burning restored. By every metabolic measure, recovery. And she still couldn't find her words, her name recall was slipping, and pulling routine data at work took twice as long.
When the numbers are that good and the brain still isn't working, the pull is to reach for a villain. There was one. Residual mercury, a failed visual contrast screen, the whole detox story ready to be told. It's satisfying. You can fight a heavy metal.
The correct answer sat in the CBC the whole time, and it was boring.
Hematocrit 56, RDW 22, a smear that had been quietly abnormal for months. Not a toxin. Thick blood. A high hematocrit raises blood viscosity, and thicker blood moves slower through the smallest vessels feeding the brain. Delivery drops, and word-finding, visual processing, and mental stamina drop with it, no matter how well the mitochondria are running.
Here's the part nobody says out loud. The dramatic diagnosis is easier to sell to the patient and easier for the clinician to feel heroic treating. Nobody feels like a hero managing a hematocrit. That gap is where people get treated for the wrong thing for years.
This is an order of operations problem, not a supplement problem. At Root Cause Functional Medicine we follow the objective abnormality, not the interesting one, and read the whole system before naming the enemy. The exciting answer and the correct answer are rarely the same answer.
โDr. Angie Martinez | Root Cause Functional Medicine ๐ Arvada, CO | Direct-pay functional medicine for complex chronic cases
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