Controversial Keto Diet Study Is Retracted
Newser • • health
Key Points:
- The Journal of the American College of Cardiology: Advances retracted an April 2025 study claiming ketogenic diets do not contribute to arterial plaque buildup, following concerns about selective data reporting and weak statistical methods.
- Co-authors Nicholas Norwitz and Dave Feldman requested the retraction after discovering anomalies during a deeper review, with Norwitz noting he lacked access to raw data before publication.
- Despite the retraction, Norwitz and Feldman continue to promote their keto research and have released a new preprint based on the same dataset, drawing criticism for advocacy overshadowing scientific rigor.
- Other research has linked ketogenic diets to increased "bad" cholesterol and elevated heart disease risk, contradicting the retracted study's conclusions.