I'm not sure we know the long-term effects on psycological function for any diet type, but I see nothing nefarious about conducting this study.
As Jenny pointed out, there was a high dropout rate -- this is in concurrence with my experience and those of many others. Indeed, very few of us know even one other person in our real lives that do LC, and given the wonderous results some have with it, how can that be?
It's hard to follow because we are constantly bombarded with commercials, fast food, prepared foods, etc, all telling us that LC is bad and a lot of people aren' willing to give up sugar, potatoes, etc.
A friend of mine is suffering horribly from pain in his knees. Doc told him it was his weight (5'6", 225 lbs). He saw me drop froma size 20 to a size 8 in just months. I told him how I did it and he said, "but I'd have to give up Coke". Duh....I said, yeah and the added bonus to that is that you'd get to keep your freaking teeth!".
I have an upper plate largely because of many years of 2 liters or more of Coca Cola per day.,
We all have to give up something to get to our goals. I do eat more carbs than most of you, but for my metabolism, it works. For others, it probably wouldn't. But when I'm in full LC mode, not a bit of simple carbs pass my lips and that's how I did it. I don't eat the complex starches every day, but I do eat some. I found this wonderful sprouted brown rice and I do occasionally have a corn tortilla or whole wheat pasta, but it's not part of the daily diet.
We all have to do what works best for us. And I took a page from Jimmy and had a free day once in a while. I think Jimmy did it every 6 weeks, I did it every time I dropped a pants size.
I didn't feel deprived, I was never really hungry and when I just had to have sweets, well, there are lots of sugar free candies out there, I bought 12 chocoperfection bars about 4 months ago, have given away half of them and still have two. I could eat them all the time if I wanted, they taste just like chocolate, but I'm trying to curb my addiction to sweets in any form, so I rarely eat a whole bar in a day. A square is enough.
Point is that you have to make it a lifestyle and allow yourself to stumble sometimes without just giving up. If I eat something I shouldn't, i don't beat myself up, I just do better the next day.
No Longer in Texas, but can't change my name
I was on the side of righteousness, and like any fundamentalist, I could only stay there by avoiding information. - Lierre Keith