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Ray Peat Interview Dr. Ray Peat, Brad Marshall on the History of PUFA and Obesity (Part 1). Show-Title: A Neighbor's Choice.

tankasnowgod

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Here is a PUFA consumption chart from the USDA, to go along with the conversation about different metabolic rates in different decades-

PUFA US.jpg

It likely went even higher since then, with the war on "hydrogenated oils," which means less Trans Fats and Saturated Fats, and even more PUFA from the same type of oils (eg, partially hydrogenated soybean oil has less PUFA than normal soybean oil).

pufa-obesity-B.jpg
 

Sefton10

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Loved the calorie talk. Ray smashing 9000 back in the day while strolling in the woods.
 

Vileplume

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Ray Peat slays
 

Dave Clark

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Pearson and Shaw talked about PUFA in their book from 1982, and were on many talk shows. Peat says nobody else was talking about it back then, but actually it was them who I first heard about PUFAs and their dangers. They also talked about the dangers of iron and copper as free radical catalysts. I am surprised Peat didn't mention them.
 

Vileplume

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Great interview, thanks for posting it.

Some takeaways:

-kids gotta drink milk, have carbohydrate, eat fruit (candy is okay!)

-milk is useful for newborns because they’re born with excess iron, and milk’s lack of iron let’s kids “grow into their iron” over the first year of life

-when people’s bodies stop growing, PUFA begins to accumulate extra fast, until the point that in old age, the extent of dementia directly correlates to the amount of n-3 fatty acids

-Sugar rots teeth not because it is harmful in itself, but because poor diet (mainly PUFA) has caused our saliva to use it’s antiseptic qualities

-Traditional cultures (Thai and Mayan) ate lots of low-PUFA grains and had incredibly high metabolic rates. 1930’s George W. Crile’s studies showed that American cultures had way lower metabolic rates (50% lower) than traditional cultures

-in the 1930s, the American south had low metabolic rate before the northern US did, which correlates with the northward-spreading popularity of cottonseed oil

-In1939, the average wealthy adult male in the US ate over 5000 calories per day (and they didn’t seem to have a concept of “eating too much”) of mostly flour, butter, sugar, potatoes, some beef and pork, lots of milk. (They ate peaty.) If you choose pro-metabolic foods, you can eat way more calories than the current recommendations. Back then, people didn’t do any cardio and were still way leaner, despite eating more calories.

-Pork fat, chicken fat, and eggs are all radically different than they used to be decades ago, due to a shift in commercial diet for the animals that produce them. Chickens themselves are basically sources of seed oils, because of their diets

-Accoring to Tucker Goodrich, the top sources of PUFA in American diets are chicken and grain-based deserts like cake
 

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