I know of no legit organizations that recommend a detox like that.
Once the week is done, I'm going to try and cut meat out except for 2 meals a week, and reduce my caffeine intake drastically, and focus on eating non-processed foods.
I do wonder how much healthier raw juice is though, than cooked veggies. They say that in cooking a lot of nutrients are lost, though I've never actually researched this. I feel like health nuts overemphasize a lot of the benefits of non traditional diets. A lot of snake oil in that movement imho, but staying away from processed foods is a sure winner any way you slice it.
My wife used to run detox courses. She used the 10-day Metagenics plan. I did it once. It sucked pretty hard, and there was no shortage of protein on that one. I will say this: I pooped up stuff that I"m pretty sure I ate in the Clinton administration. But in the middle there's like three days where you're on protein shakes and cruciferous vegetables and that's fucking it. When I finished my ten days I had a cup of Maxwell House and a breakfast burrito and it was the best meal evar.
See, this seems to be the consensus of anybody I know that's done a detox. But like, is this a particularly good thing? I mean, I guess it's not bad, but is it good? Or just neutral? I dunno. I love coffee like a bee loves honey, and I'm about as good as making it as they are too. This will be the hardest thing to give up for a week, -much harder than solid food.
I can help you with the coffee thing. Not having any for a week will make it taste so.fucking.good when you do have it... and caffeine will actually have an effect on you again. In the meantime, though, it'll suck.