Sandra, a coworker did. She lost 30 lbs when combined with 3 weekly
one-on-one workout sessions with a personal trainer. This was over a 4 month period. She paid $3,000 for a six month service and the trainer put her on the Paleo. This was last year when I was working on the British military program.
Now I've got to say this honestly...she stuck with it, lost consistently and looked good. But....man, she was mean. I think she was simply hungry, maybe even starving, but it came out in crankiness and mean-ness to her coworkers.
Here was her typical breakfast: 2 hard boiled eggwhites, 5 strawberries and 10 blueberries. I remember this vividly because we sat together in a four-man cubicle and one morning she dropped one of her 10 blueberries, got down on the 20-year old carpeted floor, crawled around until she found it, brushed off the little sucker and ate it.
When she sat back up and saw Manuel and I starring at her, she said: "WHAT! I only get so much to eat a day!"
Then she would bring in bacon, wrap it in several papertowels and zap it for several minutes. You know that utterly delightful aroma of crispy bacon filling the air with molecules of crunchy, salty goodness? Well, you got that scent briefly, rapidly followed by the stench of burnt, charred meat. I think she was attempting to vaporize the fat and leave behind pure protein.
One girl brought in a bag of M&M's and left it on a communal table near us. T grabbed the bag, walked up to the coworker's desk, slammed it down, and yelled: "What the hell do you think you're doing!"
Ya, fun times at work.
I saw her recently and would say, based on a totally biased opinion formed from my own years of yo-yo weight gain & losses, that she has regained ~15 pounds.