The PUFA Problem: Navigating Nutrition's Controversial Fats
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- Опубликовано: 7 янв 2025
- What are PUFAs? And what are the consequences of a high PUFA diet? In addition to vegetable oils (seed oils) and nuts and seeds, confinement chicken and pork products can be high dietary sources of PUFAs. (Since chickens and pigs will have more PUFAs in their tissues if they are fed a high PUFA diet). So, knowing what you eat, eats matters!
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Low PUFA chicken and pork available at:
www.nourishcooperative.com
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Low PUFA eggs available at
www.angel-acresfarm.com
#pufas #lowpufa #healthyfats #metabolism
Wow, wow, wow. I'm so glad to have just joined your co-op. Keep up the good work!
sounds like we are on the same page - let's change the food system together!
Oh look, all comments deleted. Guess thats what's needed to uphold these nonsense bubbles.
No comments have been deleted! So I am not sure what you are referring to!
I can’t afford $40 shipping on your products aside from the products already being very expensive. I think you should do free shipping for a certain amount you buy. I normally buy my regenerative beef and chicken through US Wellness Mests and they always do free shipping for orders over 15 lbs. $40 shipping is just too much .:(
i completely understand! We are only about 1 year into business, while other businesses such as US wellness have been in business for 20+ years. We are doing our best right now as a small company and we hope to improve our distribution methods overtime. We can't afford to go any lower at this point in time, as a small start up our expenses are very high! We will improve overtime!
We do have '$10-$20 flat rate shipping fee for orders over $250, depending on your location.' in place tho!
How about the PUFA in fish oil?
i don't recommend fish oil pills, as they can oxidize during digestion.
You're forgetting that eating fruit and carbohydrates is also what animals like bears do who are primarily carnivore before going into hibernation...instead of Ray Peat you should listen to someone like Dr Paul Mason
the populations with the highest metabolic rates ever recorded (meaning opposite of hibernation) are starch eating cultures! My metabolic rate is much higher now that I eat carbs relative to when I was on a carnivore diet :)
However, I am supportive of any diet that makes someone feel better!
@@NourishFoodClub Interesting...it just seems to me that in most parts of the world, starch would not be available all year round.....anyway you are looking radiant
@@nataliechanel9319 thank you! Appreciate that! Starches are great for storing and can last a very, very long time! (unlike fruit and veggies, which need to be canned/preserved) and starches were a centerpiece of most cuisines! Potatoes, rice, bread, cassava, corn, beans, etc. If you want to get really nerdy this is a fun video! ruclips.net/video/qf4b2qM3-Js/видео.htmlsi=PBZ70H5tpoFVBqTw
ok but the real quesiton is, is animal PUFA actually bad? when it's not oxidized, when you balance the omega 3s. omega 3 is pufa and it's linked to better health and longevity.
thats a rabbit hole for another day :p my goal is to produce food with the natural fatty acid profile. Unfortunately the modern food system has changed the fatty acid profile of some animal fats pretty significantly over the last 50-70 years.
@@NourishFoodClubwhat about olive oil, also associated with longevity, it's pufa.
Its bad because its messes up your system, LA to AA conversion is regulated. AA is the omega6 you get from animals, as they like you also convert LA to AA in small amounts.
LA is beneficial for yout, and its an essential fatty acid. Meaning you cant survive without it. Its anti-inflammatory. Replacing saturated fats with LA omega6 is always beneficial, this has been proven in countless studies.
Yes PUFAs are terrible for humans. Carnivore diet has been a godsend to my health. Only cooking in ghee and tallow. Mostly beef, lamb and eggs.
Then why do you think they are essential? You literally cant live without them. While saturated fats are something you dont need at all, your body can produce saturated fats as much as it needs them.
@ they oxidize easily which makes them toxic. Not stable.
May I ask the omega3 is also pufa
Why is this not mentioned in this video
What is the name of the speaker
You seem well-meaning and genuinely care about people’s well-being, and I mean no hate by what I’m about to say.
However, you'd somehow to reconcile this with the overwhelming body of evidence that suggests otherwise.
I also want to point out that part of your argument addresses a straw man - not necessarily your fault, as mainstream discourse is often flawed in significant ways.
The scientific consensus isn’t that "saturated fat is bad for you." That’s not a position held by knowledgeable experts. It’s more of a misinterpretation or oversimplification that comes from second-hand reporting.
Nothing is inherently "bad for you"; it’s always about the amount and context. Consistently consuming large amounts of saturated fat over a lifetime can potentially be harmful because it elevates LDL cholesterol. The issue here is how LDL cholesterol travels in the blood via clumps called lipoprotein apoB. High concentrations of apoB can contribute to artery plaque buildup. You can think of it like a highway: the arteries are the road, and apoBs are the cars. Too many cars cause a traffic jam. So, it’s not that saturated fat or LDL cholesterol themselves are bad; it’s the potential for them to lead to a high apoB concentration.
That said, this isn’t true for everyone since there's genetic variation. Some people can consume large amounts of saturated fat and remain healthy, while others may need to be more cautious.
Saturated fat, in and of itself, is fine. This is a position universally accepted by experts because it aligns with the data. It may even have a beneficial effect towards hormone function, although it's a bit unclear if specifically saturated fat has a unique effect. Fat in and of itself does.
Regarding polyunsaturated and monounsaturated fats, the evidence consistently shows that replacing saturated fats with these types of fats reduces instances of cardiovascular disease. This makes it difficult to reconcile the claim that unsaturated fats and seed oils are inherently bad. There’s likely some healthy user bias at play - people who avoid saturated fats often adopt other positive health behaviors, such as avoiding smoking, limiting alcohol intake, and exercising regularly.
Even with potential biases, the consistent results linking the replacement of saturated fats with mono and polyunsaturated fats to better health outcomes are difficult to ignore. If unsaturated fats were harmful, we’d expect to see evidence of it somewhere in the data.
In nutrition science, one of the first lessons is that mechanistic speculation often doesn’t hold up. You can focus on isolated mechanisms triggered by consuming any food and make it seem harmful because eating anything triggers thousands of mechanisms - some positive, some negative. What truly matters is the outcome data: the overall effect of all those mechanisms combined.
For example, consider exercise. When you work out, it increases inflammation, blood pressure, heart rate, and reactive oxygen species... - all of which are ostensibly bad for heart health. Yet, we know that people who exercise regularly tend to have better heart health overall. Outcome data tells us that exercise is protective against heart disease, even though some of the immediate mechanisms might suggest otherwise.
Again, you seem like a nice person who just wants to help, so I mean no disrespect. I just think you're incorrect.
2020 Meta-analysis by Youngyo Kim et al. (Clinical Nutrition):
“Diets high in polyunsaturated fat were associated with lower mortality from all causes, CVD, and cancer, while diets high in saturated fat were associated with higher mortality.”
2015 Randomized Control Trial by K. Vafeiadou et al. (The American Journal of Clinical Nutrition):
“Substituting 9.5-9.6% of dietary saturated fats with monounsaturated fatty acids or n-6 polyunsaturated fatty acids has beneficial effects on serum lipid biomarkers, blood pressure, and E-selectin, but not on vascular function.”
2017 Systematic Review by P. Clifton et al. (Nutrition, Metabolism, and Cardiovascular Diseases):
“Replacing saturated fat with PUFA, MUFA, or high-quality carbohydrates can lower CHD events and CVD mortality, while replacing it with carbohydrate does not.”
appreciate the feedback :) I will be addressing these RCTs and meta analysis and their downfalls in upcoming videos! Have to always dive into the studies. The biggest flaws with meta analyses is that many of the RCTs included have a 'flawed' control group (the 'saturated fat' group ate a lot of processed food and trans fats)
It will take me a few weeks to get all of that finalized (in between the day to day of running the Food Club :)) but hope to have that video out before the end of the year!
I am by no means perfect! And I really really appreciate how you commented your critique :D (rare that someone does it so politely!) but I do have a PhD and have a very good handle on reading research studies meta analyses
Again, look for a video in the future addressing 'pro PUFA studies' :)
@@NourishFoodClub Oh, by the way, it wasn't my intention to insinuate that you don't understand research or are dumb or something lol. I didn't think that way at all. I'll look forward to the videos. I have zero ideological ties to the outcome; I just care about what's true, so I'm always open to ideas being challenged. I dropped you a sub so I'll see the future videos. I'm skeptical, but I'm interested in your viewpoint. The sad fact about nutrition science is that it's such a mess. Very hard to control for all variables. So many confounding factors.
@@NourishFoodClub This is right. It is often cited that replacing sat fat with PUFA is beneficial. However, you have to look at exactly what is eaten in the studies. In one study I noted that the sat fat was in "pies, pastries and cakes" and was replaced in the control group by lean meats, vegetables and olive oil. The use of olive oil in these studies is a common trick. Then in the conclusions they don't mention the oil type except to refer to it as PUFA and imply that seed oils are just fine to eat -- neglecting to mention that olive oil is much higher in MUFA than seed oils.
@@StraightEdgeJunkie appreciate this comment very much - it is rare to see a comment like this! Appreciate your willingness to hear my side :p I nerd out about these things - as fatty acids are one of my passions!
@@mikeb-so5xu exactly!!! we HAVE to dive into these studies that 'they' are using - because most of them are BS!!!!!!!