Skip to main content
An official website of the United States government
Grant Details

Grant Number: 5U2RTW010108-08 Interpret this number
Primary Investigator: Sieber, Nancy
Organization: Harvard School Of Public Health
Project Title: 2/2-geohealth Health Effects of Selected Environmental Exposomes Across the Life Course (HEALS)-Us
Fiscal Year: 2024


Project Summary/Abstract Environmental exposures are major contributors to illness and premature death in countries around the world. Air pollution is especially concerning as it promotes chronic cardiometabolic disease and can trigger acute cardiac events. In rapidly urbanizing India, an estimated 1.67 million deaths per year are attributed to air pollution, making it a factor in nearly 18% of total deaths and 11.5% of total disability adjusted life years. While the link between air pollution and ill health is becoming clearer, we need to learn more how the components of air pollution interact with each other and with other elements of the exposome such as heat, to affect health This is especially important in LMIC cities, where industry and traffic generate pollution and climate change is causing unprecedented heat waves. We also need to identify sensitive ages where air pollution exposure can be particularly detrimental. Children pass through critical windows of development when they are highly sensitive to exposures. Older adults are more likely to experience cardiac events when air pollution and heat levels rise. In addition, exposures differ for people of different ages, gender, occupations, and socioeconomic status. To address this complex situation, India needs experts trained in environmental health to carry out research and recommend effective policies to mitigate air pollution exposure and protect those most vulnerable to its effects. In this proposed project, entitled, “2/2-GEOHealth Health Effects of Selected Environmental Exposomes Across the Life CourSe (HEALS)-US,” our multidisciplinary team of researchers, mentors and faculty from the Harvard T.H. Chan School of Public Health (HSPH) and the Centre for Chronic Disease Control (CCDC) will build on knowledge gained in our original GEOHealth project in which trainees and mentors developed models to estimate levels of ambient PM2.5 in Indian cities and quantified the links between air pollution exposure and cardiometabolic disease and death in Delhi. In addition, three students earned master’s degrees from HSPH and one earned a Doctor of Public Health (DrPH). The proposed project will focus on training early career faculty and researchers and recent post-docs in designing a research study, writing up a proposal, and carrying out research on topics related to the research aims of characterizing the exposome and identifying groups most vulnerable to the effects of air pollution. Two additional DrPH students will also be trained. The project will be led by Dr.Sieber and Dr.Schwartz from HSPH and by Dr. Prabhakaran of CCDC and Dr. Reddy of the Public Health Foundation of India who will be assisted by the: 1) Administrative Oversight Committee; 2) Training Oversight Committee; 3) Program coordination personnel at HSPH and CCDC; and 4) Supervisory teams to provide oversight for individual trainees. Evidence from the research conducted under the linked U01 will directly inform Indian government agencies and policy makers on how to reduce air pollution exposures and how to protect the most vulnerable groups to reduce the consequent burden of disease. The proposed training of Indian scientists will build capacity to apply for future funding and to fully understand and address this environmental threat.


PM2.5 exposure, glycemic markers and incidence of type 2 diabetes in two large Indian cities.
Authors: Mandal S. , Jaganathan S. , Kondal D. , Schwartz J.D. , Tandon N. , Mohan V. , Prabhakaran D. , Narayan K.M.V. .
Source: BMJ open diabetes research & care, 2023 Oct; 11(5), .
PMID: 37797962
Related Citations

Daily nonaccidental mortality associated with short-term PM2.5 exposures in Delhi, India.
Authors: Krishna B. , Mandal S. , Madhipatla K. , Reddy K.S. , Prabhakaran D. , Schwartz J.D. .
Source: Environmental epidemiology (Philadelphia, Pa.), 2021 Aug; 5(4), p. e167.
EPub date: 2021-08-06.
PMID: 34414349
Related Citations

Assessing mortality risk attributable to high ambient temperatures in Ahmedabad, 1987 to 2017.
Authors: Wei Y. , Tiwari A.S. , Li L. , Solanki B. , Sarkar J. , Mavalankar D. , Schwartz J. .
Source: Environmental research, 2021 Jul; 198, p. 111232.
EPub date: 2021-05-11.
PMID: 33965390
Related Citations

Pesticide use in Thailand: Current situation, health risks, and gaps in research and policy.
Authors: Laohaudomchok W. , Nankongnab N. , Siriruttanapruk S. , Klaimala P. , Lianchamroon W. , Ousap P. , Jatiket M. , Kajitvichyanukul P. , Kitana N. , Siriwong W. , et al. .
Source: Human and ecological risk assessment : HERA, 2021; 27(5), p. 1147-1169.
EPub date: 2020-08-27.
PMID: 34290491
Related Citations

Building capacity for air pollution epidemiology in India.
Authors: Prabhakaran P. , Jaganathan S. , Walia G.K. , Wellenius G.A. , Mandal S. , Kumar K. , Kloog I. , Lane K. , Nori-Sarma A. , Rosenqvist M. , et al. .
Source: Environmental epidemiology (Philadelphia, Pa.), 2020 Oct; 4(5), p. e117.
EPub date: 2020-10-01.
PMID: 33134770
Related Citations

Exposure to Particulate Matter Is Associated With Elevated Blood Pressure and Incident Hypertension in Urban India.
Authors: Prabhakaran D. , Mandal S. , Krishna B. , Magsumbol M. , Singh K. , Tandon N. , Narayan K.M.V. , Shivashankar R. , Kondal D. , Ali M.K. , et al. .
Source: Hypertension (Dallas, Tex. : 1979), 2020 Oct; 76(4), p. 1289-1298.
EPub date: 2020-08-17.
PMID: 32816598
Related Citations

Ensemble averaging based assessment of spatiotemporal variations in ambient PM2.5 concentrations over Delhi, India, during 2010-2016.
Authors: Mandal S. , Madhipatla K.K. , Guttikunda S. , Kloog I. , Prabhakaran D. , Schwartz J.D. , GeoHealth Hub India Team .
Source: Atmospheric environment (Oxford, England : 1994), 2020-03-01; 224, .
EPub date: 2020-01-27.
PMID: 32405246
Related Citations

Leveraging Existing Cohorts to Study Health Effects of Air Pollution on Cardiometabolic Disorders: India Global Environmental and Occupational Health Hub.
Authors: Walia G.K. , Mandal S. , Jaganathan S. , Jaacks L.M. , Sieber N.L. , Dhillon P.K. , Krishna B. , Magsumbol M.S. , Madhipatla K.K. , Kondal D. , et al. .
Source: Environmental health insights, 2020; 14, p. 1178630220915688.
EPub date: 2020-04-20.
PMID: 32341651
Related Citations

Association of Long-Term Exposure to Fine Particulate Matter and Cardio-Metabolic Diseases in Low- and Middle-Income Countries: A Systematic Review.
Authors: Jaganathan S. , Jaacks L.M. , Magsumbol M. , Walia G.K. , Sieber N.L. , Shivasankar R. , Dhillon P.K. , Hameed S.S. , Schwartz J. , Prabhakaran D. .
Source: International journal of environmental research and public health, 2019-07-16; 16(14), .
EPub date: 2019-07-16.
PMID: 31315297
Related Citations

Back to Top