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This is a Cross-Sectional study.

September 10, 2025Frontiers in NutritionOpen Access

Association between dietary fatty acid intake and preserved ratio impaired spirometry in U.S. adults: a population-based cross-sectional study

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Increased intake of saturated and polyunsaturated fatty acids is associated with lower prevalence of preserved ratio impaired spirometry.
Each standard deviation increase in saturated fatty acids intake significantly reduces odds of PRISm by 14%, while polyunsaturated fats reduce it by 12%.
Cross-sectional analysis used data from 9,103 adults in the National Health and Nutrition Examination Survey to assess dietary effects.
Findings suggest dietary strategies could support pulmonary health, if confirmed by further prospective studies.

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Cross-sectional analysis indicates dietary fatty acids relate to preserved ratio impaired spirometry, suggesting possible dietary interventions.

Liu et al. (2025) studied this question.

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Cross-sectional analysis indicates dietary fatty acids relate to preserved ratio impaired spirometry, suggesting possible dietary interventions.