Demographic correlates of weight-loss strategies in US adults: Cross-sectional analysis of NHANES data 2017-2020.

Objective: To investigate the frequency of various weight loss strategies among adults in the United States and to explore which weight-loss strategies are associated with several demographic factors.

Methods: The study utilized 2017-2020 data from the National Health and Nutrition Examination Survey. Adult participants (N = 3,130) who had tried to lose weight during the past year were included. Pregnant women and individuals under age 20y were excluded. Weight-loss strategies were categorized into 6 groups: consuming more healthy options (e.g., more fruits); consuming less un-healthy options (e.g., junk food); quality of diet changes (e.g., changed eating habits); assisted weight-loss method (e.g., special diet); exercising; and un-healthy strategies (e.g., vomiting). Adjusted odds ratios (aORs) and 95%CIs were calculated using weighted logistic regression models.

Results: The most frequently employed strategies to achieve weight loss were exercising (60.6%), consuming less un-healthy options (60.4%), and drinking a lot of water (55.3%). Un-healthy strategies were less prevalent among older individuals (aOR:0.46 [95% CI:0.37-0.58]) and those with higher incomes (aOR:0.69 [95% CI:0.54-0.89]). Conversely, individuals with obesity class I (aOR:1.85 [95% CI:1.38-2.48]) and obesity class II/III (aOR:1.69 [95% CI:1.27-2.25) showed an increased likelihood of adopting unhealthy strategies. Similarly, widowed individuals (aOR:1.31 [95% CI:1.03-1.66]) and those who have never been married (aOR:1.36 [95% CI:1.09-1.69]) exhibited a higher tendency for such behaviors compared to married individuals.

Conclusion: The likelihood of using various weight-loss methods differs based on demographic characteristics. Recognizing these tendencies can guide public health initiatives and customized strategies for weight control.