21-Day Tummy Diet Success Stories

Our testers collectively lost 90 pounds and 29 belly inches in just three weeks on the 21-Day Tummy plan, and improved their digestion too! Read their diet success stories here.

By Liz Vaccariello from 21-Day Tummy (Reader's Digest Association Books) and

Rob McMahonSteve Vaccariello
No more daily heartburn medication!

Rob McMahon, 42
Lost: 19 pounds and 2 1/2 belly inches in 21 days!
Proudest Accomplishments: Dropped more than his goal weight; stopped taking heartburn medication completely
Favorite Recipes: Ginger and Tomato Flank Steak; Tomato Lime Quinoa Salad

At 6’3”, Rob is tall enough to carry his weight well. Most of his colleagues (me included) were surprised to learn that he had extra pounds to lose—but at 233 pounds, his BMI put him on the high end of the “overweight” category. And he was feeling it. He was usually exhausted by day’s end, and the bursitis pain in his right shoulder was flaring up more frequently.

Plus, he had constant, severe heartburn. He had been relying on daily prescription medication to control the symptoms and, previously, when he had tried to wean himself off of it, as soon as he skipped a dose, he felt a lot of discomfort. But on day 1 of the 21-Day Tummy diet, “I stopped taking the medication, and I did not need it once. My acid reflux is completely gone.” Amazing.

Rob almost didn’t try the diet. Because he had several business trips plus a vacation scheduled during the 21-day trial, he wasn’t sure he would be able to follow the plan. But he found it easy to find belly-friendly foods when eating out—and once he started seeing results, it was easy to avoid the temptations offered by his dining companions.

Rob’s goal had been to “start the journey of losing 15 pounds,” but he didn’t necessarily expect to do it all in 21 days. Instead, he blew away his expectations, dropping a whopping 19 pounds—that’s almost a pound a day! “To know that I lost even more than I wanted. . . . I just simply feel better about myself. This plan is giving me more confidence. I have more stamina and less exhaustion by day’s end. I’m sleeping better as well.

“Compared to other diets, the weight loss of the 21-Day Tummy diet was much quicker. Other plans took 3 or 4 months to accomplish what I did here in 3 weeks. I’ve been able to kick the ‘habit’ of eating just to eat, and now I eat when I’m truly hungry—and choose satisfying foods.”

His best advice: “Commit to it 100 percent. It’s easier than you think to reduce portions when you’re eating the right kind of food. If you stick with it, you’ll see results fast—I lost 9 pounds in just the first 5 days.”

Next: Dorothy lightens up, losing 6 1/2 pounds in 21 days »