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Tylenol and Autism: Evidence, Scientific Blunders, and Medicine Gone Wrong
Tylenol and Autism: Evidence, Scientific Blunders, and Medicine Gone Wrong by William Parker, PhD, is a provocative,...
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Tylenol and Autism: Evidence, Scientific Blunders, and Medicine Gone Wrong by William Parker, PhD, is a provocative, evidence-focused investigation into the disputed "Tylenol autism link"--the hypothesis that acetaminophen (Tylenol/paracetamol/APAP) exposure can trigger autism spectrum disorder (ASD) in biologically susceptible babies and young children. Rather than relying on a single study, Parker organizes roughly 30 distinct lines of evidence across pharmacology and metabolism, human associations involving time/place/behavior, laboratory animal neurodevelopmental toxicity, and additional observations--then weighs that total body of evidence against alternative explanations and common objections. The book digs into proposed mechanisms (including early-life limits in detoxification pathways, oxidative stress-linked susceptibility, and gut-brain effects) and emphasizes "timing of risk" from pregnancy through labor/delivery and early childhood. Beyond the science, it examines the logic of the controversy--how statistical mistakes (such as misclassifying interacting variables as confounders), peer-review failures, and conflicts of interest can shape medical consensus. In Tylenol and Autism, Dr. Parker confronts, with intelligence, honesty, and bravery, what is an undeniably culturally and politically explosive issue intensified by the 2025 White House spotlight on acetaminophen and autism.
Author: William Parker
Publisher: Childrens Health Defense Books
Published: 06/23/2026
Pages: 312
Binding Type: Hardcover
Weight: 1.10lbs
Size: 9.10h x 6.10w x 1.20d
ISBN: 9781648212468
About the Author
William Parker was born in Savannah Georgia in 1965 and raised in rural Arkansas, graduating from the University of Arkansas at Little Rock. He proceeded to graduate school at the University of Nebraska where he met and married Susanne in 1989. He earned a PhD in Chemistry in 1992, and then worked for more than 27 years at Duke University, studying transplantation biology, chronic immune dysfunction, and autism spectrum disorder. He is best known for discovering the function of the human appendix as a safe-house for beneficial bacteria, uncovering the beneficial effects of some intestinal worms for mental health, and being the first to compare immune function in wild and laboratory animals. In 2001, he transitioned from Duke to WPLab, a private, non-profit company focused on research and education, and he is currently a visiting scholar at the University of North Carolina, Chapel Hill. William is an artisan blacksmith and enjoys cooking for Susanne and friends. He has worked with scouting programs for decades and, on some days, is reasonably good at tomahawk throwing.
Author: William Parker
Publisher: Childrens Health Defense Books
Published: 06/23/2026
Pages: 312
Binding Type: Hardcover
Weight: 1.10lbs
Size: 9.10h x 6.10w x 1.20d
ISBN: 9781648212468
About the Author
William Parker was born in Savannah Georgia in 1965 and raised in rural Arkansas, graduating from the University of Arkansas at Little Rock. He proceeded to graduate school at the University of Nebraska where he met and married Susanne in 1989. He earned a PhD in Chemistry in 1992, and then worked for more than 27 years at Duke University, studying transplantation biology, chronic immune dysfunction, and autism spectrum disorder. He is best known for discovering the function of the human appendix as a safe-house for beneficial bacteria, uncovering the beneficial effects of some intestinal worms for mental health, and being the first to compare immune function in wild and laboratory animals. In 2001, he transitioned from Duke to WPLab, a private, non-profit company focused on research and education, and he is currently a visiting scholar at the University of North Carolina, Chapel Hill. William is an artisan blacksmith and enjoys cooking for Susanne and friends. He has worked with scouting programs for decades and, on some days, is reasonably good at tomahawk throwing.
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