#Vegan🌱#keto (low sat fat, 0 cholesterol)
vs.
Meat and Egg heavy diet + 120g net carbs
N=1 Crossover experiment
Surprisingly, LDL >300 mg/dL on vegan keto and ~100 mg/dL on meat and egg plus carb diet 🤯
👉 If this doesn't make you curious, I don't get you
2/ This contradicts the explanation that sat fat is the primary driver of ⬆️ LDL on low-carb
While it may represent an outlier case (& sat fat may primarily drive⬆️LDL in others), that these lipid results can present in anyone requires an explanation beyond conventional wisdom
3/ 2022 has been a good year for study of the Lean Mass Hyper-Responder phenotype with 5 manuscripts published:
-Demonstrating presence of the phenotype
-Providing explanation in the form of the Lipid energy model #LEM
1/7)🤯 New study in PNAS shows low-doses of sweetener aspartame can produce anxiety behavior 🧠in mice that's TRANSMITTED to their children and grandchildren 👦👶
2/7) The first experiment the team performed in this study was to expose male & female mice to normal drinking water or water with 0.015-0.03% aspartame
Notably this dose is only 7/8-15% the FDA recommended max dose for human intake, and the equivalent of 2-4 diet sodas per day
3/7) They found that even at this low-dose, anxiety behavior was increased in male and female mice as measured by an open-field test (OFT)
In this common assay, mice are placed in a playground of sorts and the less time they spend in the open center represents more anxiety
Because I've seen seed oils rise quickly as a perceived villain within (and outside) the low-carb community as a presumed critical cause of metabolic dysfunction
Is this the case? ...
2/10) Before I go on, I will be clear about my Personal choices
I am convinced that intake of high amounts of oxidized highly processed soy, corn, grapeseed oil etc. are 'sub-ideal'
I never use in my own cooking, preferring ghee, avoid oil, EVOO, etc.
3/10) That said the tendency of TWto promote simplicity and vitality over nuance has - I believe - contributed to an over-eager messaging and vilification of "seed oil"
-
HERE TAKEN to BROADLY to mean oils from seeds/nuts high in Omega-6 relative to most animal-based foods
1/6) New Paper @NatMetabolism shows how fat cells in lean healthy mice and infants can change what would normally be an inflammatory signal into a beneficial one
2/6 Research team finds that young fat cells are resistant to inflammatory response to mtRNA (or synthetic analog) and INSTEAD respond with increased mitochondrial protein content
Basically, converts would-be inflammation into signal for new mitochondria!
3/6 They find the mediator of inflammatory response to mtRNA is "IRF7" protein.
IRF7 is low in adipocytes of lean human children, but increased with #obesity (mice and human)
In a phrase IRF 7 is the "judo flip" and low IRF7 permits mite-biogenesis response to mtRNA
2/ The study in question is a mouse study, as you can really perform these fine mechanistic study in animal models
Data show that genetics variation among mice was a minor contributor and the variations in microbiome composition were more important for physical performance...
3/ To show the microbiome mediates the effects, they knocked out the microbiome with antibiotics in high-performer mice and the result was an impairment physical performance by 50%! (2a)
By contrast, microbiome transplant could enhance performance.
Omega-3 fats have sex-specific impacts on lipids, LDL, HDL & TG!
Thread + video breakdown...
1/ In this new paper published in the @LipidJournal, researchers performed a Double-Blinded Randomized Crossover to see how EPA & DHA imapct lipids and mean dn women
2/ The study was a has 21 subjects each with at least 1 marker of Metabolic Syndrome
There was a 4 week run-in period, followed by 10w on 3g/d of EPA or DHA, a washout period, and then the other long-chain fatty acid. Again, order was randomized and study was double-blinded...
3/ Researchers found:
(1) EPA and DHA both ⬇️ TG.
(2) EPA and DHA both ⬆️ LDL-C/ApoB ratios, suggesting more large fluffy healthy buoyant LDL-C