Analysis of the levels and food source of cadmium exposure by dietary pathway among middle-aged and elderly populations in cadmium-contaminated areas of China
10.3760/cma.j.cn112150-20240718-00580
- VernacularTitle:我国镉污染地区中老年人群经膳食途径的镉暴露水平及食物来源分析
- Author:
Xiaochen WANG
1
;
Yi ZHANG
;
Xiaojie DONG
;
Ruiting HAO
;
Xiu YE
;
Wenli ZHANG
;
Ying ZHU
;
Ailing LIU
;
Yuan WEI
;
Bing WU
;
Yufei LUO
;
Changzi WU
;
Yanning MA
;
Zhengxiong YANG
;
Yuebin LYU
;
Gangqiang DING
;
Dongqun XU
;
Xiaoming SHI
Author Information
1. 中国疾病预防控制中心环境与人群健康重点实验室 环境与健康相关产品安全所，北京 100021
- Publication Type:Journal Article
- Keywords:
Cadmium;
Diet;
Source
- From:
Chinese Journal of Preventive Medicine
2025;59(5):597-603
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the levels and source of cadmium exposure by dietary pathway among middle-aged and elderly people ≥40 in cadmium-contaminated areas of China.Methods:A total of 7 193 people aged 40-89 years from four typical cadmium-contaminated areas in China were selected as the study subjects. Food Frequency Questionnaire (FFQ), Total Diet Study (TDS) and a 3-day-24-hour dietary recall survey were conducted. Dietary cadmium intake and food sources through dietary pathways were assessed based on cadmium content in foods, consumption amounts and intake frequencies.Results:The mean age of the participants was 63.39±12.21 years, with 50.05% being males. The average monthly dietary cadmium intake was 7.39 μg/(kg·BW). Staple foods and vegetables were the primary sources of dietary cadmium intake, accounting for 57.51% and 32.48%, respectively. The monthly dietary cadmium intake in all surveyed regions did not exceed the Provisional Tolerable Monthly Intake (PTMI) recommended by the Joint FAO/WHO Expert Committee on Food Additives (JECFA).Conclusion:The monthly dietary cadmium intake among middle-aged and elderly people in cadmium-contaminated areas of China is relatively low, with the risk remaining at an acceptable level. Staple foods and vegetables are the most significant contributors to dietary cadmium intake.
