The Sugar Busters Diet has gained widespread popularity over the past few decades.

Based on a book published in 1995 by a group of physicians, the diet focuses on limiting refined carbs and added sugars while increasing lean proteins, healthy fats, and high-fiber fruits and veggies.

Although some dismiss it as little more than a fad diet, others claim the plan can increase weight loss, manage blood sugar levels, and support better heart health.

This article reviews the Sugar Busters Diet and whether it’s effective for weight loss.

How our ratings workX

We considered six important standards and assigned a rating to each, with 1 being the lowest rating and 5 being the highest. The Overall Rating for each diet is an average of these ratings.

Weight Change: This rating considers how fast the diet will make you lose or gain weight, whether the weight change can be sustained for 3 months or longer, and whether the diet is a crash diet. A crash diet is a very low-calorie, restrictive diet that comes with lots of health risks. Crash dieting can cause muscle loss, a slowed metabolism, nutritional deficiencies, dizziness, and more. They’re not safe or healthy.

Healthy Eating Habits: This rating considers whether the diet limits entire food groups, and whether it disrupts your daily life with complex, specific requirements on what to eat or how to track your food. It also considers whether the diet focuses on long-term lifestyle changes and encourages habits like eating more whole foods, cooking at home, eating without distractions, etc.

Nutrition Quality: This rating considers whether the diet is based on whole foods rather than processed ones. It also considers whether the diet will cause nutrient deficiencies or a calorie deficiency if you do it for longer than 2 to 3 months. Though you can add vitamin and mineral supplements to any diet, it’s best to focus on getting what you need through a balanced diet.

Whole-Body Health: This rating considers whether the diet sets unrealistic goals, makes exaggerated claims, and promotes an unhealthy relationship with food or appearance. It also considers whether the diet promotes exercise and focuses on overall health rather than just weight. While you may have a weight-related goal you hope to achieve through dieting, it’s important to nourish your body and make sure you’re staying healthy regardless of how you choose to eat.

Sustainability: This rating considers how easy the diet is to follow, whether you can get support for it, and if it can be maintained for 6 to 12 months or longer. It also takes cost into consideration, since some diets require buying premade foods or paying membership fees. Diets that are sustainable are more likely to be healthy in the long term. Yo-yo dieting can contribute to health issues.

Evidence-Based: This rating considers whether there’s evidence to support the diet’s health claims. We review scientific research to see whether a diet has been clinically proven by impartial research.


Overall Rating 3.17

Weight Change 3.5

Whole-Body Health 4.0

Healthy Eating Habits 2.8

Sustainability 3.5

Nutrition Quality 3.3

Evidence-Based 2.0

Bottom Line

The Sugar Busters Diet cuts out refined carbs and added sugars while encouraging certain fruits, veggies, whole grains, lean proteins, and healthy fats. Its principles may aid weight loss, though the diet itself hasn’t been studied.

The Sugar Busters Diet is based on the theory that sugar is “toxic” and can cause weight gain by increasing levels of insulin — the hormone that transports sugar out of your bloodstream and into your cells.

Insulin is also responsible for regulating energy storage in your body. Chronically high levels of insulin have been associated with weight gain in many studies (1).

To minimize insulin levels, the plan focuses on cutting out foods with a high glycemic index (GI), which is a measure of how much and quickly a specific food causes blood sugar levels to rise (2).

In place of high-carb options like pasta, white flour, and sweets, the diet encourages low-glycemic and fiber-rich foods, such as legumes, whole grains, healthy fats, and proteins.

Diet guidelines

The authors recommend limiting carbs to about 40% of your daily calories, with 30% coming from fat and 30% from protein.

Though the authors consider the diet a “correct carbohydrate lifestyle,” the macronutrient ratios may be defined as a mild low-carb diet by some sources (3).

The book also advises limiting saturated fats by opting for low-fat dairy products and lean cuts of meat.

Unlike other fad diets, the Sugar Busters Diet doesn’t require you to purchase pricey ingredients, special equipment, or expensive subscription plans. It’s also designed to be followed long term.

In addition, you don’t have to count calories, and it doesn’t place strict guidelines on how much physical activity you need to incorporate into your daily routine.

The diet recommends reducing refined carbs and processed foods that are high in calories and lacking in nutrients.

The authors claim that eating healthy, high-fiber ingredients can help stabilize blood sugar, decrease cholesterol levels, and manage your blood pressure.


The Sugar Busters Diet limits foods with a high glycemic index and encourages eating low-glycemic, fiber-rich foods, such as legumes, whole grains, healthy fats, and proteins.

The Sugar Busters Diet doesn’t require you to count calories or track nutrients, but it does recommend reducing your consumption of refined carbs and added sugars.

Though research is limited, evidence suggests that this could be an effective strategy for weight loss.

For example, one study in 2,834 adults found that eating a higher amount of refined carbs was associated with increased belly fat, while eating more whole grains was linked to less belly fat (4).

Another large review of 32 studies showed that sugar-sweetened beverages were tied to increased weight gain in both adults and children (5).

On the other hand, eating more fiber can stabilize blood sugar levels and slow the emptying of your stomach to increase feelings of fullness, decrease calorie intake, and support weight loss (6, 7).

Many studies also find that low-carb, high-protein diets — such as the Sugar Busters Diet — are effective at decreasing hunger, increasing weight loss, and reducing body fat (8, 9, 10).

One 10-week study in 89 overweight and obese women compared the effects of a high-protein, high-fiber diet with a high-carb, low-fat diet (11).

Participants on the high-fiber, high-protein diet lost significantly more body weight and body fat than those on the high-carb, low-fat diet (11).

Therefore, the Sugar Busters Diet may help decrease appetite and reduce calorie intake to promote weight loss — though more research on the diet itself is needed.


Reducing refined carbs and added sugars while increasing fiber intake may support weight loss. Some studies also show that low-carb, high-protein diets can promote weight loss and fat-burning.

In addition to supporting weight loss, the Sugar Busters Diet may be linked to several other health benefits as well.

Because it limits high-glycemic foods and refined carbs, it may help stabilize blood sugar levels and promote heart health.

In one 2-year study in 307 people, following a low-carb diet improved several heart disease risk factors.

Those on a low-carb diet experienced greater increases in HDL (good) cholesterol, as well as greater reductions in diastolic blood pressure (the bottom number), triglycerides, and LDL (bad) cholesterol than those on low-fat diets (10).

Another study found that a low-carb diet was more effective than a low-fat diet at reducing fasting blood sugar levels and hemoglobin A1C — a marker of long-term blood sugar control — in people with type 2 diabetes (12).

Additionally, cutting out added sugars can reduce inflammation in your body. Chronic inflammation has been linked to the onset and progression of many conditions, including heart disease, certain cancers, and obesity (13).

Other benefits of the Sugar Busters Diet are that it requires minimal nutrition knowledge, is easy to follow, and doesn’t have complicated rules or regulations.

This makes it a good choice for those looking to lose weight and improve their health without investing in expensive diet products or calculating calories and macronutrients.


In addition to promoting weight loss, the Sugar Busters Diet may also help regulate blood sugar levels, promote heart health, and reduce inflammation.

The Sugar Busters Diet relies heavily on restricting specific foods, including some that may contain important vitamins and minerals, such as certain types of fruit or starchy vegetables.

Instead of emphasizing a healthy, well-rounded diet, the Sugar Busters Diet also tends to label foods as “good” or “bad,” which could contribute to the development of unhealthy eating behaviors.

Additionally, while decreasing added sugars and refined carbs can improve overall health, completely cutting sugary foods out of your diet long term may be difficult for many and could contribute to cravings (14, 15, 16).

The diet also encourages the use of sugar substitutes, such as aspartame, saccharin, and sucralose.

While these popular sweeteners have been approved for use by the Food and Drug Administration (FDA), research suggests that they may cause adverse health effects (17, 18, 19, 20).

For example, artificial sweeteners may negatively impact blood sugar regulation, appetite, and body weight, and may even have harmful effects on the healthy bacteria in your gut (21).

Furthermore, the Sugar Busters Diet doesn’t provide specific guidelines for other key factors that are integral to a healthy lifestyle, such as portion sizes or physical activity.

Therefore, while the diet may be effective for short-term weight loss, it should be paired with other lifestyle changes and behavioral modifications for long-term success.


The Sugar Busters Diet cuts out many foods that contain important nutrients, it doesn’t address other lifestyle factors — such as exercise — and may be overly restrictive, potentially fostering unhealthy eating behaviors.

The Sugar Busters Diet encourages eating low-glycemic fruits, as well as fiber-rich foods like whole grains and veggies.

Lean proteins, healthy fats, and low-fat, sugar-free dairy products are also permitted.

The diet recommends the following foods:

  • Fruits: apples, oranges, strawberries, blackberries, raspberries, peaches, watermelon, etc.
  • Vegetables: asparagus, broccoli, cauliflower, sweet potatoes, tomatoes, etc.
  • Whole grains: oats, brown rice, barley, buckwheat, couscous, etc.
  • Proteins: lean meats, poultry, seafood, eggs, legumes
  • Dairy products: low-fat or fat-free milk, cheese, and yogurt without added sugar
  • Fats: nuts, seeds, olive oil, vegetable oils, etc.
  • Sugar substitutes: stevia, sucralose, saccharin, aspartame, etc.
  • Alcohol: red wine (in moderation)

The Sugar Busters Diet allows low-glycemic fruits, vegetables, whole grains, proteins, healthy fats, sugar substitutes, and low-fat dairy products without added sugar.

On the Sugar Busters Diet, high-glycemic fruits, starchy vegetables, and refined grains should be avoided.

Processed foods, sugar-sweetened beverages, and sweeteners like sugar, honey, and syrup should also be excluded.

Foods you should limit include:

  • High-glycemic fruits: pineapples, ripe bananas, mangoes, kiwis, dried fruit, etc.
  • Starchy vegetables: potatoes, corn, plantains, peas, parsnips, etc.
  • Refined grains: white bread, pasta, white rice, and white-flour products
  • Processed foods: crackers, chips, prepackaged snacks, fast food, etc.
  • Sweeteners: sugar, honey, syrup, agave, etc.
  • Sugary foods: ice cream, candy, cookies, cakes, etc.
  • Sugar-sweetened beverages: soda, sports drinks, sweet tea, fruit juice, etc.
  • Alcohol: beer and sugary mixed drinks

High-glycemic fruits, starchy vegetables, refined grains, processed and sugary foods, sweeteners, and sugar-sweetened beverages should all be avoided on the Sugar Busters Diet.

Apart from limiting certain foods, the Sugar Busters Diet is very flexible and easy to follow.

Here’s a 3-day sample menu for the Sugar Busters Diet:

Day 1

  • Breakfast: vegetable omelet with peppers, onions, broccoli, and tomatoes
  • Lunch: grilled chicken with roasted asparagus and brown rice
  • Dinner: zucchini noodles with chicken meatballs and marinara sauce
  • Snacks: celery sticks with hummus, apple slices, and a handful of almonds

Day 2

  • Breakfast: almond milk smoothie with whey protein, spinach, and strawberries
  • Lunch: baked salmon with sweet potato wedges and a side salad
  • Dinner: Greek salad with grilled chicken, spinach, low-fat feta, tomatoes, olives, onions, cucumbers, and olive oil
  • Snacks: garlic roasted chickpeas, hard-boiled egg, and sliced pear

Day 3

  • Breakfast: oatmeal with cinnamon and plain, low-fat yogurt with berries
  • Lunch: stuffed bell pepper with turkey, quinoa, onions, tomatoes, garlic, and low-fat cheese
  • Dinner: stir-fry with beef, broccoli, peppers, cabbage, and onions
  • Snacks: kale chips, sliced peach, and low-fat cottage cheese

A sample menu for the Sugar Busters Diet includes a good assortment of low-glycemic fruits, vegetables, whole grains, healthy fats, and lean proteins.

The Sugar Busters Diet cuts out refined carbs and added sugars while encouraging certain fruits, veggies, whole grains, lean proteins, and healthy fats.

Its principles have been shown to aid weight loss, blood sugar control, and heart health, but the diet itself hasn’t been studied.

If you want to give the diet a try, it’s best to pair it with other lifestyle changes and behavioral modifications to maximize its potential impact on long-term weight loss and overall health.