Bold claim up front: cutting out butter and cheese may not protect millions from health risks after all. Butter is widely enjoyed, yet it’s long carried a quiet alarm about saturated fats inside. New findings, however, suggest that for many people, reducing saturated fat does not meaningfully lower the chance of dying over time.
For decades, saturated fats—abundant in red meat and dairy products like cheese and yoghurt—have earned a reputation as dietary villains. They’ve been tied to clogged arteries and higher risks of heart attacks and strokes, making them a central target in public health messaging and dietary guidelines.
The NHS acknowledges that a small amount of fat is essential for a healthy, balanced diet, but it advises limits: men should aim for no more than 30g of saturated fats per day and women no more than 20g, with even less being better.
A large meta-analysis of 17 studies, encompassing 66,337 participants, examined how reducing saturated fat affects health outcomes. The researchers found that only people at high risk of cardiovascular disease seemed to benefit significantly from cutting saturated fats.
“For individuals at low cardiovascular risk, reducing or modifying saturated fat intake shows little to no benefit over a 5-year period,” the study reported in the Annals of Internal Medicine. Yet, they noted that among high-risk individuals, there is low- to moderate-certainty evidence of meaningful reductions in mortality and major cardiovascular events.
An accompanying editorial from researchers at the University of Barcelona, Dr. Ramon Estruch and Dr. Rosa Lamuela-Raventós, suggested a shift in how saturated fats are viewed. They quote the idea that health effects of saturated fats may range from negative to potentially protective for certain subtypes, depending on context. They argue the old “diet-heart hypothesis”—that saturated fats directly raise heart disease risk by increasing cholesterol—was based on weaker evidence of association rather than proven causation. In their view, a diet that includes a variety of fats—polyunsaturated, monounsaturated, and diverse saturated fats—within an overall balanced pattern could be beneficial for some people.
Current NHS guidance continues to warn that excess fat, and particularly saturated fat, can raise cholesterol and heart disease risk. UK guidelines still emphasize reducing saturated fat and replacing it with unsaturated fats as part of a healthy dietary pattern.
However, experts urge caution before overhauling guidelines. Professor Nita Forouhi of the University of Cambridge noted that the analysis didn’t track health outcomes over a full decade—the timeframe many heart-disease risk models use. She warned that it would be premature to change existing UK recommendations to keep saturated fat below 10% of total energy intake based on these findings alone.
In short, the message isn’t black-and-white. For some people, cutting saturated fats may yield significant benefits, while for others the gains are less clear. This nuance invites ongoing discussion about who should modify fat intake and how to balance overall dietary patterns for long-term health. Is there a one-size-fits-all answer, or should guidance become more personalized, taking into account individual risk, genetics, and lifestyle? What do you think about the idea that some saturated fats might not be as harmful as once believed, or even could be beneficial for certain groups? Share your thoughts in the comments.
