A Harvard researcher specializing in metabolism and nutrition has explored uncharted territory in cholesterol management through an innovative experiment.
Within the esteemed environments of Harvard and Oxford, the 28-year-old researcher faced the daunting challenge of being a “little fish with a big idea,” he said, adding that he intended to make a substantial scientific contribution while operating without the backing of multimillion-dollar grants.
Understanding Cholesterol
Cholesterol is a term that often ignites passionate debate in health care. Viewed by many as a primary factor in heart disease, cholesterol also plays a critical role in multiple bodily functions.Central to this discussion is LDL-C, or low-density lipoprotein cholesterol, which is commonly labeled as “bad” cholesterol. The protein component, LDL, acts as a transporter of cholesterol. LDL particles are like delivery trucks, circulating fat fuel and cellular building blocks throughout the body.
Traditionally, medical professionals have linked an excess of LDL “trucks” to arterial plaque accumulation, which elevates one’s risk of heart attack and stroke. And given that nearly 94 million U.S. adults are said to have high cholesterol, the importance of understanding these risks is undeniable.
Lean Mass Hyper-Responders: A Unique Group
Cholesterol levels are unusually high among a specific group of otherwise healthy people, called lean mass hyper-responders (LMHRs).These are typically active, athletic people with little body fat who eat a low carbohydrate, ketogenic diet. They are named for their lean physiques and high cholesterol levels. In fact, in what Mr. Norwitz calls the LMHR phenomenon, these individuals are known to experience dramatic escalations in their LDL-C levels, which can reach as high as 500 to 600 milligrams per deciliter (mg/dL).
These people provide a unique metabolic profile to test an almost ridiculous hypothesis: Can you lower cholesterol with Oreos instead of medication?
Dr. William Cromwell, a seasoned lipidologist and physician, said people within the LMHR phenotype tend to have very high levels of LDL-C, high-density lipoprotein cholesterol (HDL-C), and low triglycerides.
These traits craft a distinctive lipid profile that is rare in the general population but relatively prevalent among lean individuals on low-carb diets.
“This case study adds to our understanding of an atypical group of people—lean individuals who have a substantial increase in LDL cholesterol on a ketogenic/very low-carb diet,” he told The Epoch Times.
The explanation of this phenotype originates from the lipid energy model (LEM), which proposes that reduced carbohydrate intake changes the way fats are processed, which in turn may influence cholesterol levels in otherwise metabolically healthy people.
For lean people, cutting down on carbs means their bodies use more fat for energy. This change primarily happens in the liver, which produces more very-low-density lipoprotein, a type of particle that carries fats in our blood. Once these particles deliver their fat cargo, they become LDL-C (the so-called “bad” cholesterol) and HDL-C (the “good” cholesterol). This process explains why LDL-C and HDL-C levels in these individuals can rise while triglycerides (another type of fat) drop.
“Based on the lipid energy model, adding back carbs and repleting the store of glycogen in the liver should bring LDL-C back down in a lean-mass hyper-responder,” Mr. Norwitz said. His study suggests that the carbohydrate source, whether it’s bananas, potatoes, or even Oreo cookies, can substantially decrease LDL cholesterol.

Oreos Versus Statins
In this dietary trial, Mr. Norwitz adhered to his typical ketogenic diet, which is low in carbohydrates (20 grams per day). Subsequently, he introduced a unique variable—eating 12 Oreo cookies per day for 16 days, adding 100 grams of carbohydrates to his diet. During this phase, he maintained ketosis with ketone supplements, ruling out ketosis as a factor in any increase in his LDL-C levels.After a three-month break to reset his weight and health markers to their original state, he embarked on the second phase of the experiment. This time, he took 20 milligrams of rosuvastatin, a statin drug used for lowering cholesterol, every day for six weeks, all while sticking to his ketogenic diet.
The results were striking. Initially, Mr. Norwitz’s LDL-C level was 384 mg/dl. After the Oreo supplementation, it plummeted to 111 mg/dl, a 71 percent reduction. In the second phase of the experiment, adding statin therapy, his LDL-C levels rose to 421 mg/dl but were only reduced to 284 mg/dl, a 32.5 percent reduction.
“The results in this case study are consistent with changes expected from the LEM, and demonstrate the potential for substantial and rapid LDL cholesterol lowering by increasing dietary carbohydrates in selected individuals,” Dr. Cromwell said.
“This study is helpful for lean individuals who experience a significant increase in LDL cholesterol on a ketogenic/low-carb diet. For such people, diet modification (increasing carbohydrates), rather than medications, should be considered as the first line of treatment if LDL lowering is needed.”
Constraints of the Oreo Experiment
While Mr. Norwitz’s experiment has garnered interest, its limitations must be acknowledged. The study reflects the singular experience of Mr. Norwitz, who is categorized as an LMHR individual. The results of his experiment can’t be broadly applied to the general population.“This was a metabolic demonstration. I sincerely hope nobody takes this to mean Oreos are good for heart health,” Mr. Norwitz said. “Nevertheless, the experiment raises an uncomfortable implicit question about the consequences ... and I love uncomfortable questions in science.”
The core concept of Mr. Norwitz’s study, the LEM, is an evolving model yet to gain scientific consensus. While it sheds light on how low-carb diets may influence cholesterol levels in particular cases, it doesn’t account for all variables influencing those levels across different diets and populations. “It’s not meant to be all-encompassing,” Mr. Norwitz said. “No models are complete, but some are useful.”
Challenging the Status Quo
The pursuit of knowledge in academic medicine frequently encounters significant hurdles, notably in securing funding. Many studies are backed by the pharmaceutical and food industries, which can lead to conflicts of interest, especially when research might contradict industry agendas. For independent researchers, finding support for unconventional research can be daunting.“I think funding is the greatest hurdle in conducting this type of research,” Dr. Cromwell said.
Mr. Norwitz agreed, pointing out the challenges faced by researchers with innovative ideas but limited resources. “I’m in an environment surrounded by the world’s top experts. How could I see something they don’t? How can I pursue this question without the established academic muscle or the funding to make a large-scale experiment happen?” he said.
Mr. Norwitz believes this experiment is more than just a scientific inquiry; it’s a call to attention within the medical field about a model that could revolutionize our understanding of cholesterol management for the general population, he said.
“What I want people to walk away with is a feeling of curiosity,” he said. “One of the greatest pleasures in life is when reality defies your expectations, and you’re like an infant seeing the world anew.”