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21-Day Tummy

Liz Vaccariello's "revolutionary" approach improve digestive health due to discomforting bloat and constipation.

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Editor-in-chief of Reader’s Digest and author of the New York Times bestseller The Digest Diet, Liz Vaccariello exercises regularly and eats right, and she is at a healthy weight for her height and age. Despite her healthy lifestyle, though, Vaccariello doesn’t feel very healthy. She suffers from near-constant discomfort caused by bloating, severe cramping, and irregularity, which has led to weight gain and tight fitting clothing. She sounds like a lot of her female readership, right?

In 21-Day Tummy, Vaccariello talks about constipation, bloating and irregularity – topics many women want to avoid out of embarrassment. While Vaccariello admitted to being uncomfortable talking about her issues, the discomfort and weight gain caused by them was greater. Plus, she noticed that the same foods that caused her discomfort were the same foods that caused her to gain weight and develop a “heavy belly balloon” around her middle.

Vaccariello and Kate Scarlata, a registered dietitian who specializes in treatment of digestive disorders, developed and tested the diet outlined in 21-Day Tummy. Designed to rid you of your digestive issues while slimming your belly, the diet also helps you identify your trigger foods, which cause tummy troubles and weight gain.

  • Outlines common digestive disorders, explains their causes and provides ways to treat with diet and nutrition
  • Personal success stories of Vaccariello’s friends and colleagues provide testament to the 21-Day Tummy diet program
  • Healthy meal-planning is outlined week-by-week with shopping lists, recipes and food swapping guidelines
  • 21-Day Tummy includes a fitness routine specialized for stomach and digestive health
  • The nutrition outlines and the recipes provided are meant for people who suffer from upset stomach, bloating and heartburn, among other digestive disorders, and are not necessarily ideal for people simply losing weight
  • Food groups, such as wheat and dairy, are removed or severely limited in 21-Day Tummy
  • The exercise plan in 21-Day Tummy is meant for calming and curing digestive disorders and might not be intense enough for people looking to lose more weight

The 21-Day Tummy diet soothes tummy troubles and shrinks your midsection by balancing the bacteria in the GI tract and reducing inflammation caused by certain types of foods. Foods are categorized into good foods and not-so-good foods. Belly Buddies, such as peanut butter and bananas, are good for digestion, and Belly Bullies, such as high fructose corn syrup and milk, are not good for digestion. Vaccariello claims that the 21-Day Tummy diet can treat and sometimes even cure common digestive disorders, such as heart burn and acid reflux.

Nutrition required to balance bacteria and reduce inflammation includes:

  • More magnesium-rich foods
  • More anti-inflammatory fats
  • Fewer carb-dense foods
  • Fewer FODMAPs

FODMAPs are foods that are easily fermentable or contain one or several types of chemicals that cause gas and bloating, such as beans and legumes. Several healthy foods contain these chemicals, such as pears and cauliflower, both of which are rich in vitamins and minerals. The 21-Day Tummy diet does not ban FODMAP foods, but it does help identify which ones will affect you negatively and help you keep your consumption of them in control.

In 21-Day Tummy, Vaccariello outlines personal cases of the 11 voluntary test subjects (her friends and colleagues) and various digestive disorders and how you can overcome those issues. For example, Vaccariello is one of her own examples since she suffers from constipation, which is caused by anything that slows the passage of food through the digestive tract. Sometimes that slowdown is caused by food! Lack of fiber and dehydration are the culprits behind constipation. Replacing those two necessities through eating fiber-rich food and drinking enough water can treat constipation and prevent suffering from chronic forms of the disorder.

21-Day Tummy also provides more than 50 recipes for a healthy digestive system, including Chipotle Veggie Burgers and Twice-Baked Potatoes with Pepper Hash.


The best weight loss programs provide two sides of a weight loss equation: diet and exercise. The 21-Day Tummy diet goes into great detail about identifying digestive disorders and correcting them through diet and nutrition, and it also has a workout program.

The “triple threat” of the 21-Day Tummy workout program uses interval walking, core strength training and yoga to soothe and shrink a troubled tummy. Vaccariello, a former executive editor of Fitness Magazine, stresses that regular exercise that is not too strenuous or too intense is best for whittling away belly fat and treating digestive disorders.

21-Day Tummy outlines workouts week-by-week categorized as “walks” and “moves,” which are not too intense for beginners and are perfect for soothing and shrinking your belly.


Reader's Digest's Liz Vaccariello believes that Americans need the 21-Day Tummy diet because it addresses the troublesome belly pooch and the painful bloating, constipation and irregularity no one wants to talk about. By testing our guts through eating different types of foods, we can identify which will cause discomfort and learn how to replace them in our diets or avoid them altogether. With a detailed walking workout program incorporating some core strength training exercises and yoga, we can also shave excess fat off of our midsections for a healthier weight. If you are suffering from constant constipation or uncomfortable bloating and gas, the 21-Day Tummy diet might be the solution to your troubled tummy

Common Misspellings

Tummy Diet, 21 Day Tummy, 21 Day Belly, Liz Vaccariello Diet, Reader's Digest Diet, Reader's Digest Tummy Diet, bloating diet

Related Diets: 400 Calorie Fix, Flat Belly Diet Cookbook, Prevention's Flat Belly Diet, Abs Diet for Women, Flat Belly Diet Family Cookbook, Flat Belly Fat Burning Diet Simplified, The 12 Hour Flat Belly Diet Solution, The Digest Diet, Wheat Belly, Abs Diet

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