10.3390/polym8030084

Vollständiger Abstract

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<b>Objective</b>: This study assessed dietary soy isoflavone (SIF) intake among Chinese women ≥14 years, identified determinants, and evaluated adequacy against the Specific Proposed Level (SPL) in Chinese Dietary Reference Intakes, to inform targeted guidance. <b>Methods</b>: Intake was estimated using a distribution model combining 2017-2020 China National Food Consumption Survey data with SIF concentrations from food composition tables. Demographic differences and adequacy versus age-specific SPL were examined; supplemental doses were calculated for individuals below SPL. <b>Results</b>: Mean SIF intake was 14.77 mg/standard person-day, generally low. Significant differences (<i>p</i> < 0.05) were observed across most demographic subgroups except education. Higher mean intakes (mg/day) were seen in women aged ≥65 years (16.20), rural residents (16.38), light activity level (15.17), annual income > 100,000 CNY (15.51), manual laborers (16.11), and central China residents (highest, 21.01). Dried legumes and products, particularly tofu and its derivatives, contributed about 80% of total intake, with tofu-derived items accounting for 57.62-71.49%. Across all age groups, intake was significantly below the SPL, with >96% of participants failing to meet the recommendation. To reach the SPL, premenopausal women require ~40 mg/day supplemental SIF (equivalent to ~45 g soybeans/products), while perimenopausal and postmenopausal women require ~60 mg/day (~60 g soybeans/products). <b>Conclusions</b>: Dietary SIF intake among Chinese women ≥14 years is substantially below the SPL, a deficit that may attenuate associated health benefits. As dried beans and bean products are the dominant contributors, promoting these foods represents a feasible strategy to improve population-level SIF adequacy.

Abstract: PubMed · Datensatz