I personally think: Bad idea. Strict induction is all that is needed for detox. Also, I think you would lose a lot of weight quickly, and then gain that, plus some more when you go back to Atkins. Not to mention that it just isn't nutritionally sound to fast like that for a week. I would imagine that it could only have negative effects on the body.

My grandma used to do a 1 day fast every week. Suprisingly, that worked quite well for her in terms of weight loss and overall health (she was under a doctor's care, however).

Sorry I don't have anything scientific to offer you. Hopefully someone else can help.

~Angi~