On day 5 of the experiment, 100 burgers in, Dr. Mike sat down and read the label on what he'd been eating and asked, on camera, what is actually in these things. The film shows the patties themselves were plain beef, no seasoning added by the restaurant beyond what's on the label, but the daily total he counted from that label still ran high in fat, saturated fat and cholesterol. Individual results vary, and this isn't medical advice; it's a record of what one person ate and what he found when he looked.
What is actually in a fast-food burger patty?
The honest answer, based on what the film documents, is: less than people assume, and also not nothing. In the film, Dr. Mike’s protocol for Phase 1 was 20 Burger King burger patties a day, water only, no seasonings, no flavorings, nothing else added on his end. That’s a deliberate design choice: strip out the bun, the sauce, the fries, and isolate the patty itself.
By day 5 he’d eaten 100 burgers, and that’s when the film shows him sitting down with the nutrition facts trying to work out what he’d actually consumed. He wasn’t reading a lab report. He was reading the same label information the restaurant publishes, and doing the arithmetic himself for 20 patties a day.
What did Dr. Mike count from the label, and how reliable is it?
The film shows Dr. Mike’s own daily count from the label data: 160 grams of fat, 50 grams of it saturated, 700 milligrams of cholesterol, and 180 grams of protein for the day’s 20 patties. That’s his count, done on camera from published numbers, not a blood or tissue assay of the meat itself.
I’ll say this plainly: it’s an estimate, not a lab result, and a couple of the other figures he read off that day (trans fat and fiber) don’t line up with what a plain ground-beef patty should contain, so I’m leaving those two out here rather than repeat a number that doesn’t hold up. The fat, saturated fat, cholesterol and protein figures are the ones worth keeping.
The patty is one ingredient with a nutrition label; the rest of the tray is where the sugar hides.
Is a fast-food patty just beef, or is there more in it?
The patties in this experiment were, per the stated protocol, plain: no seasoning, no flavoring added beyond what came in the package. That’s worth separating from the bun. The film’s own accounting of the bun on an Impossible Whopper put its sugar at 10 grams, and separately, the book notes a typical fast-food bun can run up to 9 grams of sugar. That sugar is in the bread, not the patty.
In my experience, that distinction gets lost. People worry about the meat and ignore the roll, the sauce packets and the fries sitting next to it, which is where most of the sugar and refined carbohydrate in a fast-food meal actually lives. If you’re asking what’s in the patty specifically, the film’s protocol answer is: beef, plain, nothing added by Dr. Mike.
Why didn't Jim just get the patties lab-tested?
I tried. According to the book, every lab I approached either refused to run an independent breakdown of the patties or quoted a minimum price of $12,000. That’s a real number from that process, and it’s a big part of why this project leans on what chains publish on their own labels and what Dr. Mike counted from them, rather than an independent assay we couldn’t afford to commission.
That’s also why I keep repeating: if you aren’t testing, you’re guessing. We tested what we could test, bloodwork, performance, sleep, and were upfront about the one thing we couldn’t test: an independent chemical breakdown of the meat itself.
What does the evidence say about processed meat versus fresh ground beef?
A fast-food patty is closer to fresh ground beef than to deli-style processed meat, but the research on meat in general is worth knowing before you draw conclusions. The NutriRECS consortium’s guideline review, evaluating existing systematic reviews, suggested adults continue current red and processed meat consumption because the evidence of harm was low-certainty and the effect sizes small (Johnston, Zeraatkar and Han, 2019). Separately, a meta-analysis of prospective cohorts found saturated fat intake was not associated with all-cause mortality, cardiovascular disease or type 2 diabetes, while industrially produced trans fat was associated with higher mortality (de Souza, Mente and Maroleanu, 2015).
Where the research gets less forgiving is around ultra-processing generally, not beef specifically. An inpatient randomized trial found that on an ultra-processed diet, people ate roughly 500 more calories a day and gained weight in two weeks, compared with losing weight on an unprocessed diet at the same stated calorie targets (Hall, Ayuketah and Brychta, 2019). A large umbrella review of observational data also linked greater ultra-processed food exposure to higher risk of cardiometabolic disease and mortality (Lane, Gamage and Du, 2024), though that’s association, not proof the patty itself is the driver, since a fast-food meal usually isn’t just the patty.
What does the film suggest about a plain patty compared to the rest of the meal?
The film suggests, through the deliberate design of stripping out bun, sauce and sides, that the patty was never the most suspicious part of a fast-food order in this experiment. Dr. Mike’s own daily fat and protein counts came from patties alone, no bun, and that’s a separate story from what’s on the keto vs. carnivore comparison we ran later in the project.
In my experience treating and talking with people about food, I would rather see someone eat a plain beef patty on its own than the bun and a side of fries. The patty is one ingredient with a nutrition label; the rest of the tray is where the sugar, the refined starch and the extra calories tend to hide.
Does this mean fast-food patties are fine to eat every day?
No, and the film doesn’t claim that. It’s one man, one protocol, one set of daily counts from a label, over 30 days, with bloodwork before, during and after that the film covers separately. Individual results vary, and none of this is medical advice or a verdict on any restaurant’s ingredients. What the film shows is what one person ate, on camera, and what he counted from the label when he finally looked closely, on day 5, 100 burgers in.
Frequently asked questions
Are fast-food burger patties just beef?
In this experiment the protocol was plain patties with no seasoning or flavoring added, so the patty itself was closer to plain beef than the bun or sauces were.
Did Jim get the patties independently lab-tested?
He tried; per the book, every lab either refused or quoted a minimum of $12,000, so the project relied on published label data and Dr. Mike's own daily counts instead.
How much fat and cholesterol was in 20 patties a day?
Dr. Mike's own on-camera count from the label put it at 160 grams of fat, 50 grams saturated, and 700 milligrams of cholesterol for the day's 20 patties; that's his estimate, not a lab assay.
Is processed meat proven to cause disease?
The evidence is mixed and mostly observational; one guideline panel found the certainty of harm from red and processed meat to be low, while other reviews link ultra-processed food broadly to higher risk.
Where does most of the sugar in a fast-food burger meal come from?
Not the patty. The bun alone was documented at up to 9 to 10 grams of sugar depending on the item, separate from the meat.
The Bottom Line
If you want to know what’s in a fast-food patty, the honest answer from this project is: read the label, do the count yourself the way Dr. Mike did on day 5, and don’t confuse the patty with the bun, sauce and fries sitting next to it. We couldn’t get an independent lab breakdown of the meat at a price that made sense, so everything here traces back to published label data and on-camera counts, not an assay.
Watch what he actually ate and counted in The Keto Project, and read the day-by-day version in 600 Burgers in 30 Days.
Sources
- Johnston et al. 2019, NutriRECS red/processed meat guideline
- de Souza et al. 2015, saturated and trans fat meta-analysis
- Hall et al. 2019, ultra-processed diets inpatient RCT
- Lane et al. 2024, ultra-processed food umbrella review
This article is for information only and is not medical advice. Individual results vary. Speak to a qualified clinician before changing how you eat.
The whole experiment is in the film. 600 burgers, 30 days, every blood test — and the ending we never post.
Watch The Keto Project on Amazon