Association of high-fat diet with bone mineral density in older U.S. adults: a cross-sectional study of NHANES 2017–2018

These findings suggest a modest, sex- and site-specific association between dietary fat intake and femoral bone health in older adults. The observed relationships should be interpreted as exploratory and hypothesis-generating, emphasizing the need for longitudinal studies to confirm causality. Maintaining balanced macronutrient intake, rather than strict fat restriction, may be a reasonable dietary strategy for preserving bone health in aging populations.