Very interesting. However, the time frame doesn't work in this example, those studies showed reduced performance for a week, and then back to baseline or slightly above.
You are right, for the first week or two, your do feel like crap. As your body switches to using ketone bodies as energy, you go through a real down phase. However when you come out, you feel great.
Anecdotally (I hate anecdotes about health, but argh) I used to need to eat constantly to keep my energy up. I'd have breakfast, and by the time lunch came around I had to eat, or face passing out. These days I can skip breakfast (or just have a coffee with lots of cream) and that will keep my going until 2-3pm where I will have a lunch. You have no idea how liberating it is not to always be thinking about food.
So I've read 1,4, and 5 now, and found them wildly interesting. One begins to get a picture of a protein and fat focused paleo diet, providing great endurance, and our modern and reccommended carb focused diet as a serious kludge.
It really is an eye opener. I was blown away when I started reading about it all. Some good resources if you're interested.
I totally agree to that. Those sources changed the way I was thinking about human health and nutrition completely. To be quite honest, I was not thinking about these topics very much before. I would also add a source that kind of got me started:
Stephan appears to be a very knowledgeable guy, he is probably the least "radical" in his approaches, writes on a variety of topics and is not afraid to change his opinions when faced with contradicting evidence.
Anecdotally (I hate anecdotes about health, but argh) I used to need to eat constantly to keep my energy up. I'd have breakfast, and by the time lunch came around I had to eat, or face passing out. These days I can skip breakfast (or just have a coffee with lots of cream) and that will keep my going until 2-3pm where I will have a lunch. You have no idea how liberating it is not to always be thinking about food.