Is this true? Keto causes cortisol levels to increase?


#1

Help! this wasn’t the only “source” :roll_eyes:


#2

http://ketotalk.com/2016/04/17-too-much-fat-higher-vs-lower-ketones-cortisol-testosterone-on-keto/


(John) #3

That site angers me, I don’t know who runs it but I don’t like them. They twist things around for stories and promote crappy science. His “23 studies” that are the gold standard, you don’t even have to know much science to look at them and call bullshit. First on his list is this one i’m not even gonna go into all of the problems but the results that are quoted everywhere is that after 12 months people on the low carb diet lost the same amount as those on a low fat. Except they weren’t really on a low carb diet.

For the first two weeks, carbohydrate intake is limited to 20 g per day and is then gradually increased until a stable and desired weight is achieved.

So whenever they feel like they are at a weight they want, eat carbs and be merry. They followed for 2 weeks and that is all.
The other group however

(1200 to 1500 kcal per day for women and 1500 to 1800 kcal per day for men, with approximately 60 percent of calories from carbohydrate, 25 percent from fat, and 15 percent from protein) and to receive instructions about calorie counting.

So can people on a restricted calorie diet, after a year, have better results than people told to eat whatever after 2 weeks? Sure, is that what is implied by the “gold standard” study? No.

Second study in the list? I can post the main part of the methodology and you can easily see for yourself, low fat group had to maintain a deficit, low carb ate all they wanted.

The subjects assigned to the low-carbohydrate diet were instructed to restrict carbohydrate intake to 30 g per day or less.6 No instruction on restricting total fat intake was provided. Vegetables and fruits with high ratios of fiber to carbohydrate were recommended.6 The subjects assigned to the low-fat diet received instruction in accordance with the obesity-management guidelines of the National Heart, Lung, and Blood Institute,7 including caloric restriction sufficient to create a deficit of 500 calories per day, with 30 percent or less of total calories derived from fat.

These sites, most sites help readers fall prey to one of my favorite thing, Gell-Mann Amnesia.

“Briefly stated, the Gell-Mann Amnesia effect is as follows. You open the newspaper to an article on some subject you know well. In Murray’s case, physics. In mine, show business. You read the article and see the journalist has absolutely no understanding of either the facts or the issues. Often, the article is so wrong it actually presents the story backward—reversing cause and effect. I call these the “wet streets cause rain” stories. Paper’s full of them.
In any case, you read with exasperation or amusement the multiple errors in a story, and then turn the page to national or international affairs, and read as if the rest of the newspaper was somehow more accurate about Palestine than the baloney you just read. You turn the page, and forget what you know.”


(eat more) #4

are you experiencing any of the “symptoms”?

the take away message from the first link:

[quote]
Everyone is different, and the optimal carb intake varies greatly between individuals. There is no one-size-fits-all solution in nutrition.

Some people function best on a very low-carb diet, while others function best on a moderate- to high-carb diet.

To figure out what works best for you, you should experiment and adjust your carb intake depending on how you look, feel and perform.[/quote]

edit: fixed quote tags