Differential impacts of water insecurity on diet and body composition throughout the life course

水不安全对整个生命过程中饮食和身体成分的不同影响

• 批准号: 10749236
• 负责人: Joshua D Miller
• 金额: $ 3.95万
• 依托单位: UNIV OF NORTH CAROLINA CHAPEL HILL
• 依托单位国家: 美国
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2025-08-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10749236
• 关键词: Address; Adolescence; Adolescent; Adult; Affect; Age; Agriculture; Body Composition; Body fat; Body mass index; Breast Feeding; Caregivers; Child; Childhood; Cohort Studies; Communicable Diseases; Complement; Consumption; Data; Development; Diet; Dimensions; Discipline; Disease; Eating; Ecuador; Educational Curriculum; Environment; Epidemiologic Methods; Epidemiology; Equation; Exposure to; Family; Focus Groups; Food; Food production; Future; Gastrointestinal Diseases; Growth; Health; Health Surveys; Home; Household; Income; Individual; Infant; Intake; Interview; Island; Knowledge; Life Cycle Stages; Malnutrition; Measures; Mentorship; Methods; Modeling; Nutrient; Nutrition Surveys; Nutritional; Obesity; Overweight; Pathway interactions; Personal Satisfaction; Philippines; Physical activity; Preparation; Procedures; Process; Production; Public Health; Reporting; Research; Research Personnel; Resources; Risk; Role; Safety; Secure; Site; Structure; Surveys; Systems Biology; Techniques; Time; Unhealthy Diet; United States; Water; Weight Gain; Work; career; comparative; cooking; dietary; dietary guidelines; early childhood; enteric pathogen; experience; food environment; food insecurity; food preparation; improved; indexing; infancy; innovation; lens; multilevel analysis; nutrition; skills; sugar; sweetened beverage; water quality; waterborne pathogen; well water

PROJECT SUMMARY/ABSTRACT Unreliable access to safe and sufficient water for all household uses (i.e., water insecurity) is a common but understudied public health issue. Although water is itself a critical nutrient that is essential for agricultural production, food preparation, and hygienic practices that reduce exposure to enteric pathogens, few studies have examined the role of water insecurity in nutrition; most consider water quality only. A more holistic conceptualization of water insecurity could reveal important pathways by which water accessibility, reliability, and adequacy impact diet and health. Water insecurity presents substantial barriers to cooking nutrient-dense foods, which often require considerable water to be made palatable and safe for consumption. Qualitative studies have reported that water insecurity limits breastfeeding duration and undermines the ability of caregivers to prepare preferred complementary foods. Individuals experiencing water insecurity are also more likely to substitute water with sugar-sweetened beverages, plausibly contributing to weight gain and increased risk of overweight and obesity. The proposed project seeks to expand upon this formative work by examining the extent to which differential exposure to water insecurity impacts diet quality and body composition throughout the life course. A mixed-methods approach is required to comprehensively understand how water insecurity manifests at the household level and subsequently impacts nutritional well-being. The proposed project will therefore use qualitative data to complement quantitative data from 2 existing cohort studies that comprehensively measured water insecurity and diet among infants, children, adolescents, and adults on San Cristóbal Island, Ecuador and in Cebu, Philippines. Specifically, the project aims to qualitatively describe how issues with water availability, accessibility, and use impact food production, purchase, and preparation (Aim 1). Multi-level modeling will be used to assess whether household water insecurity undermines child diet quality (Aim 2) and longitudinal structural equation modeling will be applied to evaluate how changes in household water insecurity throughout early development impact adiposity (Aim 3). The project will address a recognized knowledge gap within the field by using advanced statistical procedures to model water insecurity as a multidimensional, time-varying exposure. Findings from this work have the potential to reveal new targets for addressing the growing burden of malnutrition. Additionally, the proposed rigorous curriculum in nutrition and epidemiology, as well as mentorship from thought leaders in the water and nutrition sectors, will prepare the applicant for an academic career in global nutrition.

项目总结/文摘