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William Aird: Did You Know? – Leukocytosis Take Years to Resolve After Smoking Cessation
William Aird/X
Nov 21, 2025, 06:20

William Aird: Did You Know? – Leukocytosis Take Years to Resolve After Smoking Cessation

William Aird, Professor of Medicine at Harvard Medical School, shared a post on X:

“DID YOU KNOW

… that leukocytosis can take years to resolve after smoking cessation?

Why?

Because smoking reprograms hematopoietic stem cells toward myeloid output.

Those epigenetic changes wash out slowly as new stem-cell generations replace the old.”

William Aird: Did You Know? - Leukocytosis Take Years to Resolve After Smoking Cessation

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