this post was submitted on 27 Jun 2026
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testing RFK Jr.’s reported carnivore-style diet for 30 days: meat, fermented foods, dairy, and a noon-to-7 p.m. eating window. The month produced weight loss, ketosis by urine strip, weaker workouts, intense food restriction effects, and follow-up bloodwork showing much higher LDL than earlier bloodwork.

summerizerSetup

  • The narrator used RFK Jr.'s meat-and-fermented-foods diet as a 30-day test amid chaotic health information.
  • The rules came from RFK Jr. media clips: meat, fermented foods, and a noon-to-evening eating window.
  • The tracked outcomes were starting weight, subjective wellbeing, mental clarity, and word retrieval because RFK linked them to his own results.

Rules

  • The first rule set allowed meat, fermented vegetables, yogurt, and a basic men's multivitamin.
  • Testosterone replacement and RFK Jr.'s broader supplement routine stayed outside the test because he could not list it fully.
  • The fasting window changed from noon-to-6:00 p.m. to noon-to-7:00 p.m. after the fuller RFK clip.

Daily Eating

  • Early meals were bacon, eggs, ground beef, steak, salmon, yogurt, kimchi, sauerkraut, and cheese.
  • Strict carnivore rules removed plant products, including garlic, onions, olive oil, pepper, spices, lemon, bread, and produce.
  • Home cooking became the default because restaurant meat often used plant oils, seasonings, or sauces.
  • Eating enough calories inside the narrow window was harder than eating meat itself.
  • Travel, work, movies, birthdays, moving apartments, and refrigeration limits turned normal meals into logistics problems.

Rule Confusion

  • Shawn O'Mara's materials made the rules less clear because the book used foods that strict carnivore spaces rejected.
  • The Fox segment centered meat and fermented foods, while the book included onions, garlic, blueberries, spinach, lemon, and crisp breads.
  • The "living" food idea made fermented vegetables acceptable while non-fermented vegetables became suspect.
  • RFK's ice-cream event made the diet look less rigid than the interviews made it sound, so pepper returned to the food.

Online Health Noise

  • Carnivore spaces minimized LDL concern and encouraged distrust when doctors warned about cholesterol.
  • Beef tallow and seed-oil content gave opposite answers with equal confidence, and the science stayed unverified inside the viewing experience.
  • Confident scientific language kept feeling persuasive even when the underlying point sounded weak or unclear.
  • Hank Green's explanation grounded the plant question: humans are omnivores, individual sensitivities can exist, and plants can be beneficial.
  • The fermented-food chewing explanation did not make sense because food still mixes after swallowing.

Body and Exercise

  • The corrected starting weight was 191.6 lb after a mistaken weigh-in that included the camcorder.
  • Digestion stayed mostly fine, and the first days were physically easier than expected.
  • Running and lifting became weaker around the second week, and one run slowed by about 90 seconds versus the average pace.
  • Strength training in jeans failed twice because the workouts felt unusually difficult and injury risk felt higher.
  • A urine ketone strip near the end showed that the rules were followed closely enough to reach ketosis.

Social and Mental Effects

  • The diet blocked many normal food moments: pizza, brunch, birthday food, street dogs, movie snacks, drinks, and shared meals.
  • Food became less about taste and connection and more about compliance, timing, refrigeration, and repetition.
  • Cravings intensified as the month went on, especially for bread, produce, hot dogs, cake, lime, and peanut butter and jelly.
  • The restriction briefly quieted the narrator's long-running worry about making healthy choices at every meal.
  • The restriction also revived old body-image patterns, with weight loss feeling rewarding even while the focus felt unhealthy.
  • A stress dream about eating chocolate pie and trying to vomit made the disordered side of the experiment obvious.

Results

  • On day 30, weight was 186 lb, a little over 6 lb below the corrected starting weight.
  • Extra mental clarity and word retrieval did not arrive; the result was the same self after a month of meat-heavy eating.
  • The first peanut butter and jelly sandwich after the diet tasted extraordinary because ordinary foods had been absent for weeks.
  • Follow-up bloodwork showed much higher bad cholesterol than January and triggered a medication recommendation plus primary-care follow-up.

Health System Message

  • The doctor's cholesterol message included medication and diet-and-exercise guidance, so it did not match the idea that doctors only give pills.
  • Distrust of doctors can become more powerful when people cannot afford enough medical access to have real conversations.
  • RFK's health story makes personal choice feel like the master cause of illness, but the narrator's cancer experience made that feel false.
  • Illness is not always earned by bad choices, and health does not give full control over whether people get sick.
  • A politics of total personal control can turn sickness into blame, which is the part of the diet culture the narrator found most disturbing.

References

They didn't really do zero-carb - the bacon they bought was sugar bacon. Secret sugars got into his protocol, i wish he would have used a ketomojo or a cgm to track.

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[–] Maeve@kbin.earth 3 points 4 days ago

And got a tan from it...

[–] jet@hackertalks.com 3 points 4 days ago* (last edited 4 days ago) (1 children)

Sean O'Mara's "living" carnivore diet is just mixing and matching health trends, his focus on a probiotic protocol is just based on guesses and assumptions. I suppose it does differentiate him from the "clean" carnivore approaches, but i'm not sure it actually helps people get results.

fermentation doesn't cure - lectins, oxalates, etc.... so if that is why someone is trying a elimination diet this protocol will waste their time

16:30 - he indicates the Harvard TH Chan school of public health is his trusted authority, that does inform into the biases he has during the video.

He throws out ground beef because it sat in his car for 2 hours... what on earth is he thinking? ground beef doesn't go bad that quickly!

[–] jet@hackertalks.com 0 points 4 days ago* (last edited 4 days ago) (2 children)

ok, at the end of 30 days he lost 3% of his body weight - which sound just like water weight, he had minimal ketones detected in his urine (urine strips are not super helpful to measure ketones), from what he showed of his diet it had sneaky sugar inside of it, plus not super high fat. It sounded like he had a calorie goal since the start of the 30 day period and had trouble "finishing" his meals in the eating window. He did say he felt like he was losing weight (and implied clothes were looser)

So the question is why did he only see a 3% change in body weight? Why did he feel low energy?

He wasn't clear about his calories, or his macro composition, but I would suspect either the fat was too low or not enough electrolytes. His below expectations weight loss might be the fact he was force feeding himself to hit his calorie goals rather then letting his hunger guide him. It's possible his body really was recomposing, so he lost fat, but gained muscle (hence why his pants felt looser), but he didn't record that data. (i.e. following the hyper-caloric feeding case series)

I really wish he had used a sensible guide to carnivore rather than the "living carnivore" model, too many variables at play - hardly a elimination diet at all.

things I would have liked to see him do before:

  • blood right before starting
  • dexa scan, or taping the waist, chest, arms, legs

during:

  • some body composition scale (inbody maybe)
  • a cheap CGM, and CKM, or a keto mojo
  • be clear about macro composition and any calorie targets
  • ensure adequate electrolytes throughout
  • reach out to any of the carnivore friendly doctors to consult on the plan and protocol (they really are friendly)
  • daily mood, energy logs

end:

  • blood work again
  • dexa scan, or taping
  • charting mood and energy logs
  • compare body composition / taping
[–] jet@hackertalks.com 1 points 4 days ago

When dave feldman did that plant based vs carnivore corss over 8 years ago, all the bells and whistles came out in terms of data collection, and that was for a 5k youtube channel.... we could have had so much more

[–] SaveTheTuaHawk@lemmy.ca 0 points 4 days ago (1 children)

Can't assess weight loss without knowing physical activity. Fad diets suck.

[–] jet@hackertalks.com 2 points 4 days ago* (last edited 4 days ago) (1 children)

you can lose weight with zero physical activity. This is the crux of the carbohydrate insulin model of obesity.

of course physical activity is good, and should be part of any exercise program but it isn't necessary.

give the history of carnivore going back to humans in the ice age, it's hardly a unsustainable fad diet... it is unpopular I'll grant you.

[–] silly_goose@lemmy.today 1 points 3 days ago (1 children)

of course physical activity is good, but it isn't necessary.

Most of us want to lose weight to improve our health and appearance. So I'd say exercise complements a healthy diet.

[–] jet@hackertalks.com 2 points 3 days ago

100%. it's complementary.