Vitamin B-12 is often used in weight loss programs to boost energy and metabolism.
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Typically, it is someone who has undergone some training in weight loss programs.
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And that means stress for people already on weight loss programs and opportunity for companies like Weight Watchers (WTW) seeking a share of the money spent by guilt-ridden holiday over-eaters the morning after their New Years Eve binges.
The model shows that lasting weight loss takes a long time to achieve and suggests that more effective weight loss programs might be undertaken in two phases: a temporary, more aggressive change in behavior at first, followed by a second phase of a more relaxed but permanent behavioral change that can prevent the weight regain that afflicts so many dieters despite their best intentions.
The system could make sense for insurance companies and workplace weight-loss programs, says Dr. Volpp.
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And weight-loss programs don't have to be expensive, even if they're offering financial rewards.
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Similarly, BJ's lacked employee wellness and weight-loss programs before Ms. Sen became its first female CEO in 2009.
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Not only is healthy weight hard to achieve, but showing the cost-effectiveness of weight-loss programs in the workplace also proves evasive.
Karen Miller Kovach , its chief scientist, says the decision was made because there's no long-term data to show that weight-loss programs for children work.
Rose tried commercial weight-loss programs, but nothing worked.
This could be a good thing, especially if these programs incentivize weight loss and smoking cessation.
Yet Weight Watchers International (nyse: WTW - news - people ), the largest provider of weight-loss services, is not marketing its programs to teens.
Such incentives include wellness programs, help with smoking cessation and weight loss, vaccinations and cancer screenings.
Personal trainers provide clients with programs to achieve their goals, Van Daff says, whether that's weight loss, muscle building or overall fitness.
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