Investigating lay beliefs regarding the effect of weight loss on health
Clancy Black, Lenny R. Vartanian, Kate Faasse
Abstract
OBJECTIVE: Individuals with obesity are often recommended weight loss for their health; however, the amount of weight loss that is recommended varies. Lay people's beliefs about weight loss could influence the types of behaviours they view as necessary for people with obesity. The present study explored lay beliefs regarding the health benefits of varying degrees of weight loss. DESIGN: Participants (379 community members and 235 students) read information about an obese target who lost varying amounts of weight (none vs. modest vs. substantial) following behaviour changes. MAIN OUTCOME: Participants evaluated the target's health and recommended health-related behaviours to the target. RESULTS: The substantial weight-loss target, but not the modest weight-loss target, was perceived as being healthier than the no weight-loss target. There were no differences in behaviour recommendations made to the no weight-loss and modest weight-loss targets, with most participants recommending further weight loss to both targets. CONCLUSIONS: Lay people appear to view substantial, but not modest, weight loss as beneficial to health, and they recommend further, more unrealistic amounts of weight loss to obese individuals who have already achieved modest weight loss. A failure to recognise the health benefits of modest weight loss may contribute to unrealistic weight loss goals.