Here is a picture for Dr. Atkins in his last year or two. Why do you assume he has been fat? He has been over 70 years old when this picture was taken.

As far as I know Dr. Atkins has been over weight more than 3 decades ago. He tried his diet on himself, lost all the weight he wanted to lose and stayed fit for the rest of his life.

In his last days, during his coma they said that a technical medical problem caused his weight to balloon before he died. This could have happened to any body and has absolutely nothing to do with his diet. One nasty anti Atkins organization called "PCRM" has tried to use this incident to make people disbelieve in Atkins diet, but no body with a mind could have listened to them.