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A quick method to promote fat loss, the Kekwick diet -- or Fat Fast diet -- is one of many fad diets available. Originally developed by Alan Kekwick and Gaston Pawan, the plan initially restricts participants to 1,000 daily calories, with 90 percent of these calories provided by fat sources.
How Does It Work?
Due to the low calorie restriction and the high-fat content of the diet, the body uses fat as a fuel source. There are three steps to the Kekwick Diet. During step one, participants eat five 200-calorie meals for four to five days. An example meal would be 1 ounce of tuna salad with 2 teaspoons of mayonnaise. The second step allows 1,200 daily calories in four small meals for one week. Two ounces of beef cooked in 2 tablespoons of olive oil would be considered a meal. In step three, dieters return to the step one restrictions. Overall, the diet goal is high fat and low carbohydrates, resulting in body-fat loss.
- Due to the low calorie restriction and the high-fat content of the diet, the body uses fat as a fuel source.
- The second step allows 1,200 daily calories in four small meals for one week.
What Is an Isocaloric Diet?
Before starting any type of restrictive diet, consult with your physician. According to the American Heart Association, a high-fat diet can increase heart disease risk. A healthy diet and physical activity are recommended for weight loss 1. An April 2011 article in "Eating Behaviors" supports this approach. The study participants maintained their weight loss with a low-calorie diet and regular intake of whole grains and vegetables.
- Before starting any type of restrictive diet, consult with your physician.
- The study participants maintained their weight loss with a low-calorie diet and regular intake of whole grains and vegetables.
What Is an Isocaloric Diet?
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- Eating Behaviors: Dietary Energy Density and Successful Weight Loss Maintenance
- U.S. Food & Drug Administration. Questions and Answers on HCG Products for Weight Loss. Updated May 4, 2016.
- Simeons AT. The action of chorionic gonadotrophin in the obese. Lancet. 1954;267(6845):946-7. doi:10.1016/S0140-6736(54)92556-8
- Pandey SK. HCG: Yet another fraudulence. J Pharm Bioallied Sci. 2012;4(3):255-6. doi:10.4103/0975-7406.99068
- Butler SA, Cole LA. Evidence for, and Associated Risks with, the Human Chorionic Gonadotropin Supplemented Diet. J Diet Suppl. 2016;13(6):694-9. doi:10.3109/19390211.2016.1156208
- Goodbar NH, Foushee JA, Eagerton DH, Haynes KB, Johnson AA. Effect of the human chorionic gonadotropin diet on patient outcomes. Ann Pharmacother. 2013;47(5):e23. doi:10.1345/aph.1R755
- Dr. Richard Lipman, M.D. HCG Foods New for the 800 Calorie HCG Diet in Miami, Fl.
- Chan, A. HCG Diet is Dangerous, Experts Say. Live Science. Published May 30, 2013.
- U.S. Department of Health and Human Services and U.S. Department of Agriculture. 2015–2020 Dietary Guidelines for Americans. 8th Edition. Appendix 2. Estimated Calorie Needs per Day, by Age, Sex, and Physical Activity Level. Published December 2015.
Stacey Phillips is a registered dietitian and nutrition writer. She has had articles and patient information handouts published in the "Renal Nutrition Forum" and the "Journal of Renal Nutrition." She holds a Bachelor's degree from the University of Illinois in Champaign-Urbana and a Masters degree at Central Michigan University.