While doing some research for the blog and Doctors Wellness Center, I was referred to the National Weight Control Registry (NWCR), the largest prospective investigation of long-term successful weight loss maintenance.
Given the prevailing belief that few individuals succeed at long-term weight loss, the NWCR was developed to identify and investigate the characteristics of individuals who have succeeded at long-term weight loss. The NWCR is tracking over 10,000 individuals who have lost significant amounts of weight and kept it off for long periods of time. Detailed questionnaires and annual follow-up surveys are used to examine the behavioral and psychological characteristics of weight maintainers, as well as the strategies they use to maintaining their weight losses.
You may find it interesting to know about the people who have enrolled in the registry thus far:
- 80% of persons in the registry are women and 20% are men.
- The “average” woman is 45 years of age and currently weighs 145 lbs, while the “average” man is 49 years of age and currently weighs 190 lbs.
- Registry members have lost an average of 66 lbs. and kept it off for 5.5 years. These averages, however, hide a lot of diversity:
- Weight losses have ranged from 30 to 300 lbs.
- Duration of successful weight loss has ranged from 1 year to 66 years
- Some have lost the weight rapidly, while others have lost weight very slowly–over as many as 14 years
- 45% of registry participants lost the weight on their own and the other 55% lost weight with the help of some type of program.
- 98% of Registry participants report that they modified their food intake in some way to lose weight.
- 94% increased their physical activity, with the most frequently reported form of activity being walking.
- There is variety in how NWCR members keep the weight off. Most report continuing to maintain a low calorie, low fat diet and doing high levels of activity.
- 78% eat breakfast every day.
- 75% weigh themselves at least once a week.
- 62% watch less than 10 hours of TV per week.
- 90% exercise, on average, about 1 hour per day.
Research findings from the National Weight Control Registry have been featured in many national newspapers, magazines, and television broadcasts, including USA Today, Oprah magazine, The Washington Post, and Good Morning America.
Recruitment for the Registry is ongoing. The Registry seeks individuals 18 years of age or older who have maintained at least a 30 pound weight loss for one year or longer. Happily, I qualified, recently received the application, and just completed and returned it. As I start participating, I’ll let you know more about it when I do! For now, look for information from their research studies on my blog in coming weeks.