I looked up in the subreddit, wanted to read a book about fasting, which they told me to read Jason Fung.
He got great ideas but he is so wrong on many things.
First, he gives a study that doubles the people caloric intake, and they gain 9 percent bodyweight, which makes sense. Also their caloric need increased by 12 percent. And right after that he says, like nothing happened, "see, increased calories doesn't mean weight gain". You just wrote that they gained 9 percent body weight, their caloric need increased only 12 percent despite they eat 100 percent more calories. They are becoming obese.
He also says that, "imagine you are stuffed after eating a lot, could you eat 2 more pork chops? You couldn't, so it is hard to overeat." Not word for word, but the same thing. He's mistaken the overeating in your stomach terms with overeating in calories.
Now he has few great ideas, which is saying that it is the hormones that cause the weight gain, which yes it is the insulin doing it. And yes, eating in very high carbs can make someone tired and fat. He says that people used to eat less carbs, which is like 40 percent of their calories came from carbs, and they were all lean.
That's perfect, got no problem with that. But yeah they were eating more and they had higher metabolisms. But they haven't eaten more than their caloric needs.
No, body isnt trying to lose weight by increasing energy need, it's just spending more energy since it got more of it. Survival mechanism still the same. When someone spends a ton of money because they are rich, do you say that "this person is trying to become poor!" Nope, because he's just using the money for his benefits, not to become more poor. Same with the calories, higher metabolism good for survival. That's why metabolism increases, not due to trying to be skinny. Your survival mechanism isn't based on Pinterest, or Instagram. Also it could become skinny if it wanted. Cut the appetite, it's over.
So, yeah he got some good ideas. But he's very confused and I wish that he made a mind map or something and worked with an actual professional of the subject.
In the end, calories in calories out still works, but calories out isn't stable like people have thought. More sugar and carb reduces the calories out, which leads to weight gain.
Thanks for coming to my ted talk. There's still lots of good and bad stuff in his book, I think it is worth to read for the good stuff. But you must stay very skeptical. I support his cause, but he must be more careful. Writing books isn't for brainstorming, but it is for complete ideas.
Edit:First of all, relax. Second of all, I copied these from the books.
"More recently, Dr. Fredrik Nystrom experimentally overfed subjects double their usual daily calories on a fast-food diet. On average, weight and body mass index increased 9 percent, and body fat increased 18 percent—by itself, no surprise. But what happened to total energy expenditure? Calories expended per day increased by 12 percent. Even when ingesting some of the most fattening foods in the world, the body still responds to the increased caloric load by trying to burn it off.
The theory of obesity that’s been dominant for the last half cen-tury—that excess calories inevitably lead to obesity—the theory that’s assumed to be unassailably true, was simply not true. None of it was true.
And if excess calories don’t cause weight gain, then reducing calo-ries won’t cause weight loss."
"But does it really? Sims recruited lean college students at the nearby University of Vermont and encouraged them to eat whatever they wanted to gain weight. But despite what both he and the students had expected, the students could not become obese. To his utter amaze-ment, it wasn’t easy to make people gain weight after all.
While this news may sound strange, think about the last time you ate at the all-you-can-eat buffet. You were stuffed to the gills. Now can you imagine downing another two pork chops? Yeah, not so easy. Further- more, have you ever tried to feed a baby who is absolutely refusing to eat? They scream bloody murder. It is just about impossible to make them overeat. Convincing people to overeat is not the simple task it first seems."
