There is little debate that being on a strict Atkins diet will destroy your fat and make you lose LOTS of weight in a short amount of time. But, there is however debate about the potentially harmful effects of the Atkins diet.
I personally am willing to risk it because I know FOR SURE being as fat as I am now has DEFINITE health risks.
I did this. For me, Atkins for 5 years, and losing the weight was DEFINITELY better for my health. I'm not doing Atkins now. But... you don't have to do it for the rest of your life! If you ever want tips on transitioning off of Atkins once you're at your goal, feel free to look me up
(Also, I highly recommend that after you've lost a couple dozen pounds you look into some sort of resistance training. Losing muscle sucks, and it's been a pain in the butt to get it back)
As for Karrmer's comments... I don't really think that villainizing insulin makes any more sense than the previous low fat craze. Paleo makes more sense in that at least it focuses on
unprocessed foods, even if some of the rules are completely arbitrary and vary by author.
Really, it's insulin RESISTANCE people should be concerned about. Insulin itself is kind of necessary for life. Heck, protein spikes your insulin as much as your fat+carb snacks.
Also, as the twinkie diet showed, controlling calories does matter. The guy ate 1500 calories of Little Debbie and Hostess snack cakes with a protein shake and some canned vegetables every day and lost weight, and all of his stats (cholesterol, triglycerides, BF% etc) improved.
My anecdotal "evidence", I did Atkins for 5 years and my cholesterol was abysmal. Losing 70 lbs helped, but my LDL alone was still in the 170s. It improved greatly when I started adding back in some carbs and focusing on getting good amounts of fiber, and eating more unprocessed foods. But my diet also includes oatmeal, whole wheat bread, potato, sweet potato, and the occasional donut or other unhealthy food. And on my birthday I'm having brownie cake with caramel drizzle and raspberries ala mode
That's not to say you shouldn't do Atkins, but we still do not have good science on the long term effects of being in a ketogenic state (the Innuits not withstanding) so we don't really know if it's harmful or not long term.
Personally, I think that when you look at some of the 'healthiest' cultures and their diets, you see a broad range. Most of them tend to eat less processed food and not tons of it. The Innuit ate lots of blubber (and raw caribou brains, mmm!) The Okinawans eat rice and sweet potato. The whole Mediterranean diet has their olive oil and their potatoes and legumes... and yet all have statistically better health.
To me that suggests that it's more about eating too much, and too much processed crap rather than any one macro-nutrient or food group.