F-Factor Diet

F-Factor Diet

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F Factor Plan: A High Fiber Weight Loss Method

The F-Factor diet is designed by Tanya Zuckerbrot, a dietitian, with 10 years of practical experience helping people to lose weight.

The creator of the diet claims that not only will the diet promote weight loss but it will also improve the appearance of skin and hair, boost energy levels, as well as reducing the risk of cardiovascular disease, diabetes, colon and breast cancer.

General diet guidelines are similar to the ‘Zone Diet’. Tanya recently released an updated version of F-Factor called The Miracle Carb Diet.

The F-Factor Diet Basics

The F-factor diet is based around increasing the intake of high fiber foods. Fiber helps to promote the feeling of fullness and to reduce appetite. Fiber also controls blood sugar balance which helps to maintain high energy levels.

Recommended High Fiber Foods:

  • Fiber One Cereal
  • Fiber Crackers
  • Fruit (raspberries, strawberries, blueberries, pear, apple)
  • Vegetables (salad greens, broccoli, asparagus, sweet potato, cabbage)
  • Whole Grains (brown rice, whole wheat bread)
  • Beans and Legumes (garbanzos, black beans, lentils, pinto beans)
  • Nuts (peanut butter, almond, pistachio, walnut)


4 weeks of menu plans are available at

Meal plans are set at approximately 1100 calories per day.

The book includes 75 recipes as well as guidelines for making suitable food choices when eating out.


The F-Factor Retails for $24.95 USD.


  • The diet emphasizes adding healthy foods to the diet rather than eliminating foods.
  • Contains a good balance of protein, carbohydrates and fats and does not eliminate entire food groups.
  • High nutrient content due to the emphasis on fruits, vegetables and unprocessed foods.
  • Good for those who feel hungry when dieting because the high fiber content reduces appetite while still allowing for a reduction in calories.
  • Beneficial for those with a high risk of diabetes and cardiovascular disease.


  • Serving sizes of outlined meal plans are very small. Calorie content may need to be increased for those with higher calorie requirements.
  • The first two weeks of the diet requires a specific brand of crackers with no allowance made for suitable alternatives.
  • Diet will need to be adjusted for those who are allergic or intolerant to wheat as fiber one and fiber crackers are listed as a requirement of this diet.
  • Inadequate guidance for monitoring fat intake and the types of fats in the diet.

Adequate Fiber is Healthy

Overall this is a sound eating plan based on solid nutritional principles however the calorie content will need to be increased if the diet is to be continued for more than a few weeks. Those who have a physically active lifestyle will also need to increase the calorie and carbohydrate content of the diet in order to support higher activity levels.

This is a diet that can be continued as a healthy eating plan at a higher calorie level and is especially suitable for those with a high risk of cardiovascular disease and diabetes.

By Mizpah Matus B.Hlth.Sc(Hons)

  • Raben, A., Jensen, N. D., Marckmann, P., Sandström, B., Astrup, A. (1995). Spontaneous weight loss during 11 weeks’ ad libitum intake of a low fat/high fiber diet in young, normal weight subjects. International journal of obesity and related metabolic disorders: journal of the International Association for the Study of Obesity, 19(12), 916-923. link
  • Thompson, W. G., Holdman, N. R., Janzow, D. J., Slezak, J. M., Morris, K. L., Zemel, M. B. (2005). Effect of Energy‐Reduced Diets High in Dairy Products and Fiber on Weight Loss in Obese Adults. Obesity Research, 13(8), 1344-1353. link
  • Slavin, J. L. Dietary fiber and body weight. Nutrition, 21(3), 411-418. link

Last Reviewed: February 28, 2019

Watch the video: Nutritionist Tanya Zuckerbrot: Cut Calories From Your Favorite Fall Treats. Megyn Kelly TODAY (August 2022).