Finding actual research backing up anything worthwhile is very hard. Research tends to trail the internet gurus by 5-10 years.
True, but the core of IF isn't really anything new.
If Chris Kresser has noticed that IF make people's blood sugar control worse, then I would recommend that IF NOT be used as means of controlling obesity.
Blood sugar control is one thing, adrenal fatigue OTOH? I can't even find a valid definition of the condition. Symptoms are all over the place, so vague you could pick a random person out of the crowd and diagnose him with "adrenal fatigue" which is great if you're selling remedies, not much if you're trying to make head or tail of it.
BTW I *am* a beginner, have been IF-fing for at least 10 months and I don't have 98% of the symptoms that are attributed to adrenal fatigue.
Martin Berkhan is selling books.
Is he ?
Ok, ok nitpicking
You can't use his site as confirmation that what is in his book is valid or not, or that it's appropriate in a specific case.
The principle is sound, although if IF raised cortisol levels to significant levels on a chronic basis, why that would be true only for LeanGains and not the others?
Leangains site has a link to this study: http://www.ncbi.nlm.nih.gov/pubmed/21475137
(...) I read that as evidence of the validity of the Warrior Diet concept.
We discussed that study a bit some months ago IIRC, you said something like that it would confirm the effectiveness of nutrient timing as an eating strategy i.e. putting all carbs for the day in the same meal is better than spreading all over the day.
But that would back up whatever IF regime that relies on a limited feeding time window, not just WD. The main difference in WD AFAICT is that it allows for snacks which from an outsider's perspective looks like the grazing strategy left using the front door and came right back in from the window.
BTW the guy himself says it works better for people starting from about 12% BF (IIRC), but he did have fat clients too, so IMO the problem with Berkhan is not that he's selling books, rather that he isn't, if you catch my drift.