Eggs are a staple food for millions of people around the world, known for their flavor and nutritional value. In the United States alone, per capita egg consumption reached 281.3 eggs in 2023with projections suggesting it will reach 284.4 in 2024, according to Statista. Yet eggs have long been at the center of debate over their effects on cholesterol and heart health.
In a revolutionary experience, Nick Norwitzstudent at Harvard and physiologist trained at Oxford, consumed 24 eggs per day for 30 dayschallenging conventional beliefs about dietary cholesterol. Its unexpected results sparked new discussions about the role of eggs in a healthy diet.
Norwitz’s experiment, carried out in Cambridge, Massachusettswas both rigorous and extreme. For a month, he consumed one egg per hour, every hour, totaling 720 eggs. His objective was simple: to measure the impact of this massive intake of cholesterol on his LDL cholesterol level.
Surprisingly, the results contradicted traditional hypotheses. “My LDL cholesterol dropped 2% in the first two weeks, then another 18% in the next two weeks. » » said Norwitz. These results challenge the prevailing view that dietary cholesterol directly increases blood cholesterol levels.
Norwitz attributes these surprising results to the body’s ability to regulate cholesterol. Dietary cholesterol binds to receptors in the intestines, triggering the release of cohesina hormone that signals the liver to reduce its production of cholesterol. This process ensures that the body maintains a delicate balance, even with large food intake.
Adding to the intrigue, Norwitz incorporated 60 grams of carbohydrates per day from fruits like bananas, blueberries and strawberries. He hypothesized that these carbohydrates influenced cholesterol levels by interacting with a metabolic profile he called a “lean mass hyper-responder phenotype”a condition seen in people following a low-carb diet. This combination may have contributed to the unexpected drop in LDL cholesterol.
Norwitz’s results highlight the complexity of cholesterol regulation, which goes beyond simple dietary cholesterol intake. His findings offer insight into the science of nutrition and raise questions about the validity of general dietary guidelines.
Here are two key points to consider:
Norwitz’s experience highlights the need to individualized approaches to nutrition. This suggests that traditional recommendations to limit egg consumption may be oversimplifying the relationship between diet and health. Instead, the nutrient balance, personal metabolic factorsand overall eating habits may hold the key to better understanding cholesterol regulation.
For the millions of people who enjoy eggs, these findings offer a new perspective, although they should be interpreted with caution. Extreme experiments like Norwitz’s provide fascinating information, but are no substitute for large-scale scientific studies.
The debate over eggs and cholesterol is far from settled, but this bold experiment opens the door to a more nuanced discussion about diet and health. As Norwitz himself suggests, the relationship between food and our bodies is more complex than previously thought, requiring further exploration of macronutrient interactions and individual differences.
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