Here's Snopes' take on it.
The story goes that Atkins was 258 pounds at the time of his death. That's obese for a 6 foot man. The Physicians Council for Responsible Medicine (PCRM) made a big splaash about it and took their time in the sun to promote their agenda: vegetarianism. Lots of veg*ns have had Atkins in their sights for a while now because it promotes (among other things) eating meat.
Dr. Trager, the head of the Atkins Physicians Council said it was a result of fluid retention and that he weighed 195 when admitted.
The PCRM said "Sure, that's part of it, but it's not all of it." Bad diet, blah blah blah.
Turns out that his weight at admittance was corroborated by the hospital records which were turned over to USA Today by Atkins' widow.
So, by conservation of matter, if he weighed 195 when admitted, died 8 days later at 258, and was in a coma the whole time, there's not too many possibilities for where that weight came from.
So I've been dealing with people who have been claiming that the whole thing's a lie and that he didn't really weigh 195 when he was admitted. It's a conspiracy to save the multimillion diet, according to them.
The first gal who really had at it with me finally backed off and conceded the points. Some other dude hopped into it. His whole argument is just that it's a conspiracy. No proof of it or anything. Just endless amounts of "It's all a lie!" I wonder if he's going to back off now that there's even more proof. Somehow, I doubt it.
Perhaps the next gambit is for me to take his argument and claim that Atkins was implanted with liposuction byproducts or something.
I'm so glad I find illogical people entertaining. I'm also glad that I find the confusion over my gender because of my new userpic entertaining ; )