10/09/2025
“…I would say the probability that the association between acetaminophen use by a mother and the development of autism of her child is a very low…”
Peter Attia, MD
This is the most thorough, thoughtful consideration of the data that I’ve seen on the autism and Tylenol controversy from the conventional medicine world. He does a great job in showing why observational, epidemiologic research can be misleading.
Observational research has also linked cannabis use in pregnancy to autism. However, the National Academies of Sciences, Engineering, and Medicine (NASEM) in 2017 on Cannabis and Cannabinoids (10K studies, most since 1999) concluded that there is only substantial evidence for cannabis smoking and low birth weight. There is limited or no substantial evidence to support or refute other outcomes.
https://nap.nationalacademies.org/catalog/24625/the-health-effects-of-cannabis-and-cannabinoids-the-current-state
Again, smoking any plant material creates, toxic, combustion byproducts. Delivery method matters.
From The Peter Attia Drive: Tylenol, pregnancy, and autism: What recent studies show and how to interpret the data, Oct 6, 2025
https://podcasts.apple.com/us/podcast/the-peter-attia-drive/id1400828889?i=1000730352312&r=3465
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Podcast Episode · The Peter Attia Drive · 10/06/2025 · 1h 27m