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Courageous Truth

Substack
courageoustruth.davidspeicher.com· irregular· Published 3 days ago

A personal Substack by a virologist who has stuttered since childhood, promoting and documenting his self-run red-light therapy trial for stuttering. It also campaigns against Ontario school vaccination suspensions and COVID vaccine claims, mixing personal narrative with partisan advocacy.

stutteringred light therapytranscranial photobiomodulationtpbmontario school suspensionsvaccine policycovid vaccinevirologyspeech therapysingle-person trialispapersonal journey
Platform
Substack
Frequency
Irregular
Latest issue
Oct 20, 2026
Language
English
Written for
Parents, people who stutter, and readers interested in vaccine policy and red-light therapy
Tone
opinion
Tracked since
Oct 23, 2026

Website: https://www.courageoustruth.davidspeicher.com