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.
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
Fruit (raspberries, strawberries, blueberries, pear, apple)
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. (2005). Dietary fiber and body weight. Nutrition, 21(3), 411-418. link