Journal Retracts Keto Diet Study Over Flawed Health Claims
The Journal of the American College of Cardiology: Advances has retracted a study that claimed the ketogenic diet does not contribute to arterial plaque buildup. The study, published in April 2025, faced criticism for its selective data reporting and small control groups. Co-authors Dave Feldman, a tech entrepreneur, and Nicholas Norwitz, a physician, requested the retraction after identifying anomalies in the data. Despite the retraction, Feldman and Norwitz continue to promote their keto-focused research, having released a new preprint based on the same dataset. Critics argue that the re-framing of the data is more advocacy than science, as other studies have linked the keto diet to increased cholesterol and heart disease risk. 
