Why is paramecetol safety so perplexing?

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Another study on acetaminophen (known as paramecetol in Denmark) on probability of having a child with autism, this one with over 1.5 million pregnant women, 31k who were exposed to acetaminophen. The HHS Secretary is calling it “garbage in and garbage out” because it showed no link, but in fact, it is a strong study that examined multiple confounding variables and addressed questions that had been unanswered previously. This podcast is short and so is the message: Tylenol, also known as acetaminophen or paramecetol, taken during pregnancy, does not cause autism. Period.

https://pubmed.ncbi.nlm.nih.gov/41973453

The Mitochondria in a Minute

The word “mitochondrial deficits” gets thrown around a lot as a cause of autism, but what does this really mean? This week we interview Dr. Carisa Sirois from the University of Wisconsin, who recently published a review of how the mitochondria are involved in neurodevelopmental disorders. The ways mitochondria are involved in ASD are not simple, there are many different ways in which they affect cellular function, including genetic variations leading to impaired functioning, which then leads to brain level changes. We also discuss how the mitochondria are involved in a process called oxidative stress, which has been informally proposed to be a core process in autism.

Download the publication here:

Updates from I-ACC, late prematurity and language development

What is the Independent Autism Coordinating Committee and why did it meet? This week’s podcast discusses the need and the agenda of Thursday’s meeting. In addition, more research showing that epidemiologists should consider different features of autism together with prevalence numbers because they may differ across the spectrum. Finally, different types of language development are seen in those with autism, so interventions should address these differences.

https://pubmed.ncbi.nlm.nih.gov/41786477

https://pubmed.ncbi.nlm.nih.gov/41789365

https://pubmed.ncbi.nlm.nih.gov/41849261

Rare Disease Week, the FDA, mortality in autism, trajectories and subcategories

This week’s podcast summarizes some highlights in scientific research and includes a recognition of Rare Disease Week and actions taken by the FDA to ease the criteria for evaluating genetic therapies for rare genetic disorders, the best study to date on the mortality in autism, genetic prediction of outcome in individuals with a diagnosis, and Uta Frith’s commentary on the concept of “spectrum”.

https://pubmed.ncbi.nlm.nih.gov/41773580

https://pubmed.ncbi.nlm.nih.gov/41651809

https://pubmed.ncbi.nlm.nih.gov/41661606

https://archive.ph/fPscR

Health Care for Autistic Individuals During Transition Age

This week we talk to Dr. Emily Hotez from UCLA, (and a sibling to an autistic adult) who has focused her research on reducing stigma and marginalization, which will ultimately improve research participation to increase scientifically valid options for families. She also works on a nationwide project to improve health outcomes in autistic individuals, from birth through adulthood. Her new project focuses on chronic stress on physical health in adolescents with autism. She explains the focus of her research, the study and why it is important, and other work she is doing to improve health care in those with a diagnosis and their family members. You can read more about her study here: https://uclasharelab.org/

Genetic pathways leading to autism

A landmark study that uses brain organoids from different people with different genes associated with autism showed that the different genes act as roads that go on different journeys to the same destination. This will be an enormously important discovery for identifying targets to treat different autism symptoms across different genetic causes of autism and understand the diversity of symptoms. Also, the new Interagency Autism Coordinating Committee was announced and there is not much breadth of perspectives.

https://www.nature.com/articles/s41586-025-10047-5

Wildfires, air pollution, autism and the EPA response

Air pollution, specifically one part of air pollution called PM 2.5 (named for the size of the crud in the air pollution) has been linked to autism. It’s also been tied to cancer, heart disease, asthma, obesity, and premature births. Air pollution typically comes from industrial sources and car exhaust, but it can also be the result of smoke from wildfires. Four new studies this week link air pollution exposure during pregnancy to autism. The Environmental Protection Agency has responded by easing penalties on producers of this air pollution, making it much easier for everyone to be exposed to high levels of air pollution throughout their lives. This week’s podcast reviews the new evidence and examines new policies which will increase the burden of air pollution to families.

https://pubmed.ncbi.nlm.nih.gov/41547316

https://pubmed.ncbi.nlm.nih.gov/41443491

https://pubmed.ncbi.nlm.nih.gov/41271133

https://pubmed.ncbi.nlm.nih.gov/41557972

For this podcast, trans means transdiagnostic

On this week’s podcast, we present new research summarizing how autism is part of a larger spectrum of neuropsychiatric disorders and issues. There are issues that people with autism experience that are not unique to autism; they are seen in people with ADHD, schizophrenia, bipolar disorder and depression. This is what is meant by “transdiagnostic”. These things include core autism features, co-morbid health problems, and can partially be explained by genetics. While autism is a unique condition, understanding how autism is placed in the wider spectrum of disorders and conditions will speed up discoveries in treatments and supports.

https://www.nature.com/articles/s41586-025-09820-3

https://pubmed.ncbi.nlm.nih.gov/41416939

https://pubmed.ncbi.nlm.nih.gov/41257798

The 2025 Year in Review

This year was a VERY eventful year for autism. If you want to hear a highlight of the good news, the great science that was discovered and the ideas developed to help families with autism, listen to this podcast or read the summary here: https://autismsciencefoundation.org/2025-year-in-review/. In summary: more precise subtypes of autism have been discovered and validated using biological markers, explanation for sex differences, new precision medicines for those with known genetic causes of autism, and new research studying the effects of early intervention. It was a great year for science, even with all the challenges from DOGE.

The Immune Taboo

The immune system is critically involved in autism. Of course, there are still a lot of questions to answer, particularly whether dysregulation of the immune system is the cause or a consequence of autism among others. But it is not studied enough. This week’s podcast includes new studies that examine the role of the immune system in autism, and outlines the different theories of how the immune system is involved in ASD.

https://pubmed.ncbi.nlm.nih.gov/41345879

https://www.sciencedirect.com/science/article/pii/S0889159125004490?via%3Dihub

https://www.nature.com/articles/s41380-025-03349-7

https://pubmed.ncbi.nlm.nih.gov/41125877

https://www.nature.com/articles/s41386-025-02162-8