Salt intake moderates the association between BMI and cardiometabolic risk: evidence from an occupational cohort in Beijing.

Front Nutr · 2026 · PMC13144143 · PMID 42099759

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borderline significanceno p-value reported

ALT showed positive correlation with BMI ( P -overall < 0.001, R 2 = 0.171), with a non-linearity test at borderline significance ( P -non-linear = 0.054), inflection point at 24.95 kg/m 2 (29.48 U/L, slope 2.02 U/L per kg/m 2 ).

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did not reach statistical significanceno p-value reported

DSI significantly moderated the relationships between BMI and HDL-C and ApoA1, whereas the interaction for UA was suggestive but did not reach statistical significance.

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failed to reach statistical significanceno p-value reported

highly significantno p-value reported

In the young and middle-aged population (<60 years), DSI moderating effects remained highly significant, demonstrating sex-specific threshold patterns; whereas in the elderly population (≥60 years), all interaction terms failed to reach statistical significance, with DSI moderating effects absent.

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