Overview
- A new Annals of Internal Medicine review of 17 randomized trials involving about 66,000 adults found no measurable five‑year benefit from cutting saturated fat for people at low or moderate cardiovascular risk.
- In high‑risk individuals, lowering saturated fat was linked to fewer deaths and heart attacks, with the clearest gains when calories were replaced by polyunsaturated fats.
- The analysis found no solid evidence of benefit when saturated fat was swapped for monounsaturated fats or for protein.
- Study authors and outside experts, including Nita Forouhi, highlighted trial heterogeneity, the predominance of pre‑statin eras, and short follow‑up, calling it premature to rewrite dietary guidelines.
- U.S. HHS Secretary Robert F. Kennedy Jr. has indicated the 2026 Dietary Guidelines will emphasize consuming saturated fats, drawing strong pushback from nutrition scientists who warn such advice could worsen cardiovascular health and note food‑source differences such as fermented dairy versus processed meats.