Stephanie Seneff

Stephanie Seneff was born on April 20, 1948, and has spent her career at MIT, earning all four of her degrees there — a B.S. in biophysics (1968), master's and engineering degrees in electrical engineering (1980), and a PhD in computer science and electrical engineering (1985). Her legitimate research career was spent in MIT's Spoken Language Systems group working on speech recognition, language understanding algorithms, and human-computer interaction, areas where she published credible peer-reviewed work.

The pivot that would define her public notoriety came in 2011, when Seneff began publishing papers in low-impact, open-access journals on topics related to human biology, medicine, and agriculture — fields entirely outside her training. Working primarily with co-author Anthony Samsel, she published a 2013 paper in the journal Entropy (published by MDPI, a publisher catalogued by critics for minimal editorial standards) claiming that the herbicide glyphosate causes or contributes to autism, Alzheimer's disease, cancer, cardiovascular disease, and numerous other modern chronic conditions. The paper's methodology was roundly criticized by scientists as confusing correlation with causation — a basic logical error.

In 2014, Seneff made her most quoted claim: that by 2025, at current rates of glyphosate use, half of all children born in the United States would be diagnosed with autism. The claim was widely shared in anti-GMO and anti-vaccine circles and cited extensively by advocates including Robert F. Kennedy Jr. As 2025 arrived, CDC data showed autism prevalence at approximately 1 in 36 children — roughly 2.8% — not the predicted 50%. Rather than retracting the claim, Seneff moved the predicted date to 2032 and pivoted to claiming COVID-19 vaccines cause the same damage as glyphosate.

The harm in Seneff's work derives precisely from her MIT affiliation, which provides apparent scientific legitimacy to research that practicing biologists, toxicologists, and epidemiologists have described as methodologically unsound. A 2017 review by researchers at Kings College London found her glyphosate claims 'at best unsubstantiated theories, speculations or simply incorrect.' She has been repeatedly cited by RFK Jr. and other anti-vaccine advocates as evidence that mainstream science supports their position — a profound misrepresentation of how science evaluates causation.

“Glyphosate (Roundup) is the primary cause of the autism epidemic and by 2025 half of all children will be autistic.”

Seneff's 2014 prediction of 50% autism by 2025 failed: CDC data shows autism prevalence at approximately 1 in 36 children (2.8%) in the U.S. by 2023, not the predicted 50%. Her underlying methodology — correlating rising glyphosate use with rising autism diagnoses — confuses correlation with causation, a fundamental scientific error. The same correlation logic would implicate organic food sales, s

“Glyphosate also causes or contributes to cancer, Alzheimer's, Parkinson's, cardiovascular disease, and most chronic modern diseases.”

Seneff's papers in this area have been published primarily in low-impact or MDPI-published journals known for minimal peer review. Library scientist Jeffrey Beall, who maintains a list of predatory open-access publishers, and medicinal chemist Derek Lowe have both specifically noted that her papers misrepresent the results and conclusions of other researchers' work. Major regulatory bodies includi