Glad you liked the links! Lyle McDonald is not always the most politically correct guy, but he apparently spends large amounts of time reading the latest studies on all kinds of things to do with health & fitness.
On the protein powder as a supplement - I think Kara's point was that whey has more in common with a chicken breast than with fish oil or green tea extract.
I drink protein shakes with whey protein isolate regularly. ... When my husband isn't 'tasting' them by drinking my whole glass
![Stick out tongue :p :p](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
But when I'm tracking food I generally enter in my protein shakes to fitday where my 'supplements' don't get entered. I also know someone who makes 'protein brownies' with them + egg whites and a few other things, but so far I haven't mastered that technique... Really though, convenience and taste are the main reasons I go with whey - as long as I get enough complete protein I'm not that concerned about the source. If I ever get to the point where I'm way low body fat and/or struggling to add muscle I may concern myself with long digesting vs short digesting or whatever, but it's way more important to hit the protein target than it is to optimize the type of protein.
As for detox - I think the word is pretty overloaded. As much marketing as we get on the site, 90+% of the time when people talk about detox they're trying to sell you some herbal formula to 'cleanse your liver' or something. I.e. adding more stuff to your system to magically clean it out. So far noone's actually found any substance that's more effective than eating nice fibrous veggies for 'cleansing' that way.
I've done 'detox' in the sense of giving my body a break from processed foods etc. in a couple different ways. I tried a juice only 'detox' - it did not go well for me. By day 4 I was not hungry, but all I wanted to do was crawl into a cave and sleep. I suspect this was in part because my system did not do well on a carb only intake. Actual fasting probably would have been better for me.
I've done an anti-allergen 'detox'. I cut out gluten, casein, sugar, HFCF, fake sweeteners and any food with artificial ingredients I didn't recognize. At the time I was having inflammatory issues and figured if it was an allergic reaction, it couldn't hurt to give my body a break.
Fasting supposedly has benefits, but I haven't tried it myself. Certainly if you're concerned about letting who knows what loose into your blood stream, your biggest concern should be getting plenty of liquids.
From time to time I do take a break from some allergens and artificial ingredients, which could be another form of detox. Unfortunately, if you're looking for a definition of 'clean eating' there are so many definitions it's hard to pin one down. For some, potatoes are clean, for others they're evil. You could always try a week focused on lean proteins & vegetables with some less processed whole grains like oats or wild rice thrown into the mix.