Keto and Triglycerides, the Trend That Actually Matters

Keto and triglycerides usually move the same way, and that way is down, while LDL cholesterol can climb in the same month. Pooled randomized trials point one way for triglycerides and another way for LDL in lean people. Averaging three lipids into one cholesterol verdict is how bad diet advice gets written. The film documents every blood draw from Dr. Mike's 600 burgers in 30 days. The day-30 panel stays in the film.

What Are Triglycerides, and Why Do They Move First?

Triglycerides are the fat your blood carries to be burned or stored. They answer to carbohydrate intake faster than cholesterol does. So they are usually the first line on a panel to move when the carbs leave. That is not hyperbole. It is the dullest finding in this whole argument.

The evidence says the direction holds. One meta-analysis pooled randomized trials of a year or longer, with 1,415 patients in the weight analysis (Bueno 2013). Triglycerides fell and HDL rose on very-low-carbohydrate keto, with a small LDL rise of 0.12 mmol/L. In nine lean men fed into ketosis for four weeks without calorie restriction, triglycerides dropped from 107 to 79 mg/dL while total cholesterol rose from 159 to 208 (Phinney 1983). Nine men. Four weeks. Read it as a signal, not a promise.

Sit with that split for a moment. One marker fell. Another rose. Same body, same month, same food.

Are Triglycerides and Cholesterol the Same Thing?

No. Triglycerides are fat in transit. LDL and HDL are the particles that haul it. Three readings, one sheet of paper, and they do not move as a block.

In my experience that one misunderstanding does more damage than any food. In 600 Burgers in 30 Days I put it to Dr. Shawn Baker like this: “When individuals have more fat, more meat, certain lab work tends to go up and scare other doctors or even people, someone’s cholesterol touches 200 and they start freaking out.” One number gets read. The other five get ignored.

The evidence says there is at least a proposed mechanism for the split. The Lipid Energy Model is a hypothesis paper, not outcome data (Norwitz 2022). It argues that in lean people restricting carbohydrate, a high flux of fat raises VLDL secretion and turnover. The output is high LDL and HDL with low triglycerides. Its own authors list predictions that remain untested. I quote it as a model. Not as a verdict.

What Do Pooled Trials Say About Keto and Triglycerides?

Pooled trial data sends triglycerides down. In lean adults, the same data sends LDL cholesterol up. Both findings live in the same literature, and they do not cancel out.

The evidence says body size is the hinge. A meta-analysis of randomized trials in 1,379 participants ran a meta-regression on baseline BMI (Soto-Mota 2024). LDL rose substantially in adults of normal body weight, and not in adults with high BMI. A dose-response meta-analysis of 50 trials in 4,291 patients with type 2 diabetes found cardiometabolic markers improving roughly linearly as carbohydrate fell (Jayedi 2022). Total and LDL cholesterol traced a U-shape instead. Different shapes. Different markers. The same trials.

Here is the real problem. Collapse all of it into one average, publish the average as “cholesterol”, and a lean man with falling triglycerides gets the same lecture as a sedentary man with everything rising.

What Did the Film Actually Draw, and When?

The film shows a sequence of draws, not a single verdict. Dr. Michael Brandon ate 20 Burger King patties a day for 30 days, plain, with water. The panels went out before, during and after.

At the baseline draw the film shows him listing the order at 00:13:34: CBC, thyroid hormones, inflammatory markers, vitamin and mineral panels. The book sets out four test points. Before the burgers, after them, after a reset month, then after a month of grass-finished beef. His own on-camera arithmetic for 20 patties came to 160 grams of fat a day, 50 of them saturated, 700 milligrams of cholesterol and 180 grams of protein. That was his estimate off label data. It was never a lab assay of the meat.

Here is where I stop.

One man cannot confirm or overturn a pooled average. His triglyceride line across those draws is the reveal the film was made for. The film suggests what a trial cannot: direction and timing are personal. Which way his number went, and which marker moved first, is on screen and nowhere else.

Should You Worry About Your Triglycerides on Keto?

Worry about the trend, not the single reading. One draw is a snapshot of one morning. Three draws are a direction you can act on.

If you aren’t testing, you’re guessing. Here is the test I would want in hand before anyone argued with me about my own blood.

• Fasting triglycerides, HDL and LDL reported separately — never one cholesterol headline.
• apoB or non-HDL cholesterol next to LDL, because they can disagree. In a one-year study of 349 people in nutritional ketosis, LDL rose about 10 percent while apoB did not move (Hallberg 2018; not randomized, company-run).
• A baseline before you change anything, then repeats on a set schedule.
• Your body size on the chart, since the pooled LDL response tracked baseline BMI.
• A doctor who reads all of it, and who you tell what you are eating.

Individual results vary, and nothing on that list predicts yours.

Why Don't These Trials Apply to a Fit Man Eating Patties?

Because the trial populations were nothing like him. Most of that pooled data comes from adults who were overweight, hyperlipidemic or diabetic. They were counselled onto a carbohydrate target and ate mixed food.

Dr. Mike was a fit physician eating one item, twenty times a day. His measured average ran 2,723 calories a day across the month, as the film records. No trial recruits that man. In one cleaner comparison, 609 adults were randomized to healthy low-fat or healthy low-carbohydrate eating (Gardner 2018). Average weight loss came out the same at twelve months, neither arm was ketogenic, and the spread between individuals was huge. Averages describe groups. You are not a group.

That is the honest caveat, and I would rather print it than bury it. We picked a fit subject on purpose, which narrows what his panel says about yours. Keto reads differently on every person. That is why we drew blood four times instead of once.

Frequently asked questions

Often, yes. The evidence says a 24-week randomized trial of 120 hyperlipidemic adults saw larger triglyceride falls and larger HDL rises on a ketogenic diet than on a low-fat diet (Yancy 2004). Supplements went to the keto group only, and 24 weeks is short. Treat the size of the effect as provisional.

They fade without adherence. A systematic review and meta-analysis of 23 randomized trials in 1,357 participants found better triglycerides, weight and insulin sensitivity at six months (Goldenberg 2021). Most of that advantage was gone by twelve months, at moderate-to-low certainty. The marker tracks what you eat now, not what you ate in month one.

When the two disagree, apoB tells you more. A review of discordance analyses concluded that apoB and non-HDL cholesterol track cardiovascular risk better than LDL cholesterol does (Johannesen 2025). That held most clearly in people taking lipid-lowering drugs. Discordance analysis carries statistical caveats, which the paper discusses itself.

The randomized evidence has not shown that. A meta-analysis of trials up to 16 weeks found red meat intake left glucose, insulin, HOMA-IR and CRP unchanged against eating less of it (O’Connor 2021). Triglycerides were not what those trials were built to answer. The trials were short, so the question stays open.

In the film I give the band I work from: 0.5 to 3.0 millimoles per litre of blood. That is a fuel measurement, not a lipid one. Sitting inside it tells you nothing about where your triglycerides were that morning. Which is exactly why both get drawn.

The Bottom Line

Triglycerides, HDL and LDL answer three different questions. Anyone who hands you one word for all three is guessing with your blood. Test before you change anything. Test again on a schedule. Read the markers separately, with a doctor who knows what is on your plate.

Then watch the extreme version play out on camera. I made the film and the book at Functionised Productions LLC, 8 Merchants Way, Colts Neck Township, New Jersey. The full panel sequence runs in order in The Keto Project — rent or buy it on Amazon Prime Video, or start with the prequel, 600 Burgers in 30 Days. Which marker moved first will change how you read your own panel. What will you do with it?

Sources

• Increased LDL cholesterol on a low-carbohydrate diet in adults with normal but not high body weight: a meta-analysis (AJCN)
• Very-low-carbohydrate ketogenic diet v. low-fat diet for long-term weight loss: a meta-analysis of randomised controlled trials (British Journal of Nutrition)
• The Lipid Energy Model: Reimagining Lipoprotein Function in the Context of Carbohydrate-Restricted Diets (PMC)
• The human metabolic response to chronic ketosis without caloric restriction: physical and biochemical adaptation (PubMed)
• Discordance analyses comparing LDL cholesterol, non-HDL cholesterol, and apolipoprotein B for cardiovascular risk estimation (PubMed)
• A Low-Carbohydrate, Ketogenic Diet versus a Low-Fat Diet To Treat Obesity and Hyperlipidemia (Annals of Internal Medicine)