The National Weight Control Registry

Research Findings

Klem, M.L., Wing, R.R., McGuire, M.T., Seagle, H.M., & Hill, J.O. A descriptive study of individuals successful at long-term maintenance of substantial weight loss. American Journal of Clinical Nutrition, 1997, 66, 239-246.

The first article ever published about the NWCR, this paper provides an overview of the study design, as well as a description of the first 784 participants. Individuals were enrolled in the registry if they had lost at least 30 pounds and had maintained a weight loss of at least 30 pounds for 1 year or longer. Despite extensive histories of overweight and failed dieting attempts, registry members have lost an average of 66 lb and maintained the required minimum weight loss of 30 pounds for an average of 5 years. Nearly every participant used diet and exercise to initially lose weight, and nearly every subject is currently using diet and exercise to maintain his/her weight loss. Registry members report that weight loss has led to significant improvements in self-confidence, mood and physical health. Surprisingly, 42% of participants report that maintaining their weight loss is less difficult than initially losing the weight. Future studies will examine in greater detail the weight maintenance behaviors of these individuals and identify factors which influence continued maintenance of weight loss.

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