Health Effects of Arsenic Longitudinal Study (HEALS)
HEALS is a large prospective cohort study based on individual-level data from a population exposed to a wide range of inorganic arsenic from drinking water in Araihazar, Bangladesh. Over the past 15 years, around 35,000 men and women were recruited to investigate the intermediate and long-term pre-malignant, malignant, and non-malignant health effects of environmental arsenic exposure from drinking water and diet. HEALS participants completed detailed questionnaire and clinical data, as well as biological samples at baseline and biennially thereafter, through a dedicated medical clinic established by the University of Chicago that exclusively serves the HEALS participants.
Study design
Cohort
Number of participants at first data collection
11,746 (participants)
Age at first data collection
18 - 75 years (participants)
Participant year of birth
Varied (participants)
Participant sex
All
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
2000
Primary Institutions
Columbia University
National Institute of Preventive and Social Medicine (জাতীয় প্রতিষেধক ও সামাজিক চিকিৎসা প্রতিষ্ঠান, NIPSOM)
University of Chicago
Profile paper DOI
Funders
National Institute of Environmental Health Sciences (NIEHS)
Ongoing?
Yes
Data types collected
- Computer, paper or task testing (e.g. cognitive testing, theory of mind doll task, attention computer tasks)
- Interview – face-to-face
- Physical environment assessment (e.g. pollution, mould)
- Physical or biological assessment (e.g. blood, saliva, gait, grip strength, anthropometry)
- Secondary data
- Self-report questionnaire – unspecified
- None
- None
- Healthcare data
Engagement
Keywords
Consortia and dataset groups
