For decades, the diet-heart hypothesis has dominated the way we think about nutrition and decisions made by policymakers. The hypothesis claims that saturated fats cause heart disease by raising serum cholesterol. This belief was initially supported by Ancel Keys in the 1950s and rapidly adopted by influential organizations like the American Heart Association (AHA). However, recent evidence suggests that this hypothesis is based on flawed science and major conflicts of interest.
The foundation of the diet-heart hypothesis was built on weak, associational evidence and selective data. For instance, in one landmark trial known as the Seven Countries Study, Ancel Keys excluded nations with high saturated fat intake and low heart disease rates, skewing results in favor of his hypothesis. Subsequent large-scale randomized controlled trials (RCTs) failed to show a consistent link between saturated fat intake and heart disease or mortality. Despite these findings, the hypothesis persisted, largely due to institutional biases and financial interests by Big Food.
Recent re-evaluations of clinical trial data reveal no significant connection between saturated fat and cardiovascular outcomes. Over 20 review papers have concluded that saturated fats do not increase the risk of heart attacks, strokes, or cardiovascular mortality. Moreover, some epidemiological studies, such as the PURE study, even suggest that saturated fats may lower the risk of stroke and total mortality.
The persistence of outdated dietary guidelines on saturated fats in spite of the evidence reflects long standing biases, conflicts of interest, and financial influences from the food industry rather than sound science. It is crucial for healthcare policy makers to recognize the current evidence and update dietary recommendations to reflect the true impact of saturated fats on health.
The saturated fat hoax has misled the public for decades, but the tide is turning. Embracing the latest science can lead to more accurate dietary guidelines and better health outcomes for all. Don’t fear fats; they are your friend!
The Saturated Fat Hoax
October 7, 2024
2 minute read
Longevity Path Founder PK Mills has been at the forefront of health and performance optimization for over two decades. A former university All-Canadian in track & field, two-time Canadian National champion in powerlifting, and a bronze medalist at the World Powerlifting Championships, Coach PK has guided hundreds of individuals along with teams and businesses to optimize their health and enhance their performance.
