#2-99E. Synergistic Impact: Concurrent Diet and Activity Changes on Visceral Adiposity (JAMA Netw Open, 2025)

In the management of obesity and metabolic risk, clinicians frequently navigate the complex interplay between dietary modification and physical activity. A recent prospective cohort study involving 7,256 adults from the UK Fenland study addresses this by analyzing concurrent changes in diet quality, assessed via the Mediterranean Diet Score, and objectively measured physical activity energy expenditure over a seven-year period. The investigators found that simultaneous improvements in both behaviors were associated with the greatest reduction in visceral adipose tissue, a key driver of cardiometabolic risk, surpassing the benefits of either intervention alone. Crucially, this specific association with visceral fat reduction remained significant even after adjusting for total body fat, suggesting a targeted metabolic benefit. However, when critically appraising these results, one must consider the observational design, which precludes establishing causality, and the predominantly White cohort, which limits generalizability to diverse populations. For physicians, this reinforces the clinical imperative to prescribe comprehensive lifestyle interventions; targeting diet and exercise concurrently, rather than sequentially or in isolation, appears essential for optimizing visceral adiposity profiles beyond simple weight loss.

Citation: Aryannezhad S, Imamura F, De Lucia Rolfe E, et al. Concurrent Changes in Diet Quality and Physical Activity and Association With Adiposity in Adults. JAMA Network Open. 2025. DOI: 10.1001/jamanetworkopen.2025.45232

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