Atkins was 195 and died in a coma from a head injury slipping on an icy sidewalk. That other stuff is just internet rubbish.
Went on a hyper restrictive Atkins diet last April. I dropped from 285 to 195 in 7 months.
2 tablespoons of sugar in my morning tea... my only carbs
the equivalent of 800 calories in pure protein as I could find ... tuna, chicken, turkey, ham, lean deli meats ... almost no fat
5-10 miles of treadmill/running per day
2 hours in the gym 6 days/week
Such a regimen was done for 13 days straight. On the 14th day I would rest and eat anything I desired... usually something like a 12 pack and 20 biscuits with jams, jellies, poached eggs with hollandiase, barbecue, candy... and most importantly ... fruit. I missed fruit most of all.
My caloric expenditure was roughly 1100 calories a day in straight exercise whereas my caloric intake was only 1000 at best. The simple metabolic baseline of 100 calories per 15 pounds of non fat mass and 3 per 10 pounds of fat mass on a typical person added up to about a total shortfall of 1500-1800 calories a day. I lost 3-5 pounds a week in massive 20 pound increments, my weight would plateau for 7-12 days, then fall rapidly again.
Such overdosing on protein is fairly hard on the kidneys. It is essential to drink plenty of water and take a multivitamin. I would also suggest a trip to the local health food store to acquire:
EFA (essential fatty acids): keeps headaches at bay, helps the healing process, acts as a general overall metabolic reinforcer, helps keep your body from attacking the muscle instead of the fat, great for the skin, and keeps your hair roots from being damaged by such a dramatic lifestyle change.
Magnesium Oxide: metabolic reinforcer, great for bones... better for joints
Calcium: supposedly liked to tricking fat cells into surrendering their stored energy a bit easier, bones.
Alpha Lipoic Acid with NAC: Keeps the toxins from building up in your system ... its a god send for weightlifters and anyone doing a high protein based diet.
Milk Thistle: Keeps the liver and kideys tuned like a racecar so that the toxins are flushed all the more easily.
Those are the calm and simple nutrients. If you want a rull rundown on all of the harsh stuff, let me know. It tends to get a little expensive after you get about 20 bottles of pills that you take on a daily basis.
...i don't eat much of anything really...but i'm also not hungry and take multivitamins 
i'm losing a good bit of weight...i think..i haven't stepped on a scale since malory was a baby but i was a size 16 and now i'm almost a size 10....can't argue with that.
Thank you, Peta