Day 15 Keto Project: What the Midpoint Really Showed Us

Here is the honest answer to the Day 15 Keto Project question I get most: there was no halfway blood draw. The book lists four testing points, and none of them sits at the midpoint. The call to keep going rested on a fitness retest, an HRV check and Dr. Mike's own journal. This is what the middle of the month looked like from inside the production.

Was There a Day 15 Keto Project Blood Draw?

No. There was no midpoint blood draw, and I would rather say that plainly than dress it up. The book sets out four testing points (600 Burgers in 30 Days). Before the 600 burgers, after them, after a reset month, after a month of grass-finished beef. Day 15 is not one of them. Here is the real problem with a halfway draw: we never had one to read.

What we did test, we tested hard. Those four points covered panels a routine physical never touches (the testing chapter). The list below is what the baseline included:

• hormone and cardiometabolic panels
• liver, thyroid and kidney function
• inflammatory markers
• brain scans and heart-rate-variability sessions
• a 3D body-composition scan

Why no fifth round? Money and access. The lab refused to be part of the film, so I paid for the testing myself. Extra panels were never in the plans. In my experience, self-funded science is unglamorous: you buy the information you can afford, and you always say so.

What Did Dr. Mike Write on Day 15?

He wrote that the second half had begun and that it did not feel like a win. Dr. Mike wrote on Day 15 that he woke twice with urgent trips to the bathroom (his journal). Halfway was hard to celebrate, he wrote, “when I’m doubled over in stomach pain”. He also dreamed of lecturing on 100 ways to eat cheese and meat.

Sit with that for a moment. A fit physician, two weeks in, dreaming about cheese. The film shows the same pattern on camera (The Keto Project). He is uncomfortable for “about 10 minutes to 3 hours” after every meal, and it is mildly increasing.

Three hundred patties down. Three hundred to go. No bun, no condiments, no black coffee, nothing to drink but water, and two weeks free of a vegetable. The amount never moved either, and neither did the weekly shopping: 140 patties an order (the book).

Why Was the Halfway Point the Hardest Call of the Month?

Because the first half told two opposite stories and gave us no tiebreaker. On Day 7 he had his best day of the month: a 5-mile hike, taken after almost 24 hours without food (his journal). A week later he was worse in every event he could remember. Which of those was the trend?

The main question at the midpoint was simple. Keep going, or stop? Nobody on the team knew. Chantea Goetz measured his heart rate variability while I travelled to interview experts. His personal journal did the rest. The film suggests what no number could prove by that time: he was trending down and getting through on stubbornness. That is an interpretation, his and mine.

What kept it going was not optimism. Dr. Mike insisted on being the subject. I had planned to eat them myself and he would not have it. The book’s disclaimer is the policy I stand behind: this ran under observation, and readers should not try it.

What Did the Day 14 Fitness Retest Show Before Day 15?

It showed he was worse in every event he knew of. His best standing long jump came in an inch shorter than his worst baseline jump of 8’5″ (his journal). His mile was about 20 seconds slower. That retest produced the only hard performance data of the first half.

The battery was identical at baseline, on Day 14 and on Day 29 (the testing chapter):

• two minutes on the ARX horizontal chest press
• two minutes on the ARX lat pulldown, then the belt squat
• three 40 m dashes and three 60 m dashes
• three standing long jumps and three high jumps
• one timed mile

The evidence says a dip like that is not strange. A 2026 review of 30 studies in trained athletes found fat oxidation rises sharply and maximal aerobic power holds (Gawelczyk and colleagues). Submaximal efficiency dips, though, and a decrement shows up in the first week. The limits are real: the effects are context-dependent, and nobody in those trials was living on fast-food patties. One retest is still one retest.

Could the Scale or a Wearable Have Settled It at the Midpoint?

No. Neither tool is precise enough to call a month at its middle. Dr. Mike wrote on Day 8 that his FIT 3D scan read 0.5 lb up (his journal). He had drunk 32 oz of water on the commute, so he sat around his starting weight. Weight loss at the midpoint would have told us very little.

The evidence says consumer wearables are blunt instruments. A review of Fitbit sleep tracking found high sensitivity, about 0.95, and low specificity, about 0.6 (Haghayegh and colleagues). That makes it useful for a trend and useless as a sleep lab. We kept using it anyway, because a rough trend beats a guess.

Scanners carry the same honesty problem. I wrote in the book that a trained athlete at seven or 8 percent body fat may read instead as 16 percent on a 3D scanner (the testing chapter). Muscle size fools it. If you aren’t testing, you’re guessing — and you still have to know what each test cannot see.

What Does Day 15 Mean If You Are Keto-Curious?

Less than you might hope, because this was never a keto meal plan. Twenty fast-food patties and water make a stress test, not a guide. The popular version skips that difference between a protocol and a diet. The difference is the whole point.

The evidence says the usual adjustment looks nothing like his. An analysis of 60 consumer reports of “keto flu” describes headache, fatigue, nausea and brain fog peaking in the first week (Bostock and colleagues). Those are forum self-reports, with no denominator and nothing measured. A small crossover pilot in military personnel is sturdier. Two weeks of keto induction left cognition, mood and sleep unchanged, however heart rate variability tended to fall (Shaw and colleagues). It is exploratory, in a tiny sample. Dr. Mike was two weeks past that window and still waking up sick.

Individual results vary. One physician eating one chain’s patties is a case study, not a prescription. Keto and carnivore were not the same test here (keto vs carnivore), and the entries sit in the experiment. What the back half did to his blood is in the film.

Frequently asked questions

He worked them out on camera from label data: roughly 160 grams of fat a day, 50 of them saturated, 700 milligrams of cholesterol and 180 grams of protein (The Keto Project). Treat that total as his own estimate, not a lab assay. No lab would analyse the patties for us.

Yes. Ketogenic eating runs from plant-heavy versions through to all-meat carnivore, and the macros differ while the ketosis target holds. Phase 2 of this film was a keto-pescatarian reset at 75 percent fat, with no red meat and no poultry (the book). Same ketones, a completely different plate on certain days.

Blood ketones are the measure most people trust. On camera I use a minimum of 0.5 millimoles per liter, with 0.5 to 3.0 given as the standard nutritional ketosis range (The Keto Project). Urine strips drift with hydration: mine read moderate, then small, once I drank more.

A blind taste test chose them. Eleven blindfolded judges scored four samples, and Burger King took 34 points against 17 for McDonald’s and 21.5 for Wendy’s (The Keto Project). A grass-fed patty won overall with 46. Burger King was the fast-food winner, so it became the test food.

No. The book says it plainly: this ran under observation for a film, and readers should not repeat it. If you are weighing a large change to how you eat, take it to your own physician first, especially if you manage a condition. Watching somebody else do it is help enough.

The Bottom Line

The midpoint had no lab sheet, no tidy verdict and no vindication. It had a man waking up sick, a retest he failed against himself, and a team working out whether to carry on. That is the entire stakes of the middle of an honest self-experiment. The source for every figure here is his journal or the footage. We make this work at Functionised Productions LLC, 8 Merchants Way, Colts Neck Township, New Jersey.

If you want to learn how the back half went, and what the final panels needed to show, both answers live in one place. Rent or buy The Keto Project on Prime Video, or start with 600 Burgers in 30 Days, the book that prints his journal day by day. You already know how Day 15 felt. What will you do with the rest of it?

Sources

• Consumer Reports of "Keto Flu" Associated With the Ketogenic Diet (PubMed)
• Accuracy of Wristband Fitbit Models in Assessing Sleep: Systematic Review and Meta-Analysis (PubMed)
• Cognitive, Sleep, and Autonomic Responses to Induction of a Ketogenic Diet in Military Personnel (PubMed)
• Effects of Low-Carbohydrate and Ketogenic Diets on Aerobic Performance in Trained Athletes (PubMed)