An observational study in Parkinson's Disease, sponsored by National Institute of Environmental Health Sciences (NIEHS). Completed at 1 site in United States. Open to participants aged 50 Years and older. Per ClinicalTrials.gov, last updated 2021-03-18.
Sponsored by National Institute of Environmental Health Sciences (NIEHS) · Observational
This study will examine the roles of diet, lifestyle, genes, and their possible interactions in the cause of Parkinson's disease, using information from the NIH-AARP Diet and Health Study. The NIH-AARP study was established in 1995 to examine the roles of diet and lifestyle in cancer. It included 567,169 AARP members 50 or older from California, Florida, North Carolina, Pennsylvania, New Jersey, Louisiana, and the Atlanta and Detroit metropolitan areas. In 1995, participants completed a comprehensive questionnaire on diet and a survey on demographics, medications, as well as a follow-up survey in 1996 with more detailed questions on lifestyle and medications, as well as cooking methods and early life dietary habits. A third followup survey is currently underway.
The current NIH-AARP substudy on Parkinson's disease will include approximately 9,000 participants from the NIH-AARP study - 3,000 of whom reported being diagnosed with Parkinson's disease on the most recent survey, and 6,000 control subjects. These study participants provide two saliva samples for genetic analysis and may be asked to complete a telephone interview. In addition, those with Parkinson's disease are asked permission to review medical information regarding their diagnosis.
Parkinson s disease (PD) is the second most prevalent neurodegenerative disease, affecting more than 1 million elderly Americans. The causes of PD are largely unknown, but may include both genetic and environmental factors. We thus propose a large study to investigate the roles of diet, lifestyle, genes and their potential interactions in PD etiology, using the NIH-AARP Diet and Health Study. The AARP cohort was established by investigators at NCI and recruited over half a million participants in 1995 and had prospectively collected detailed information on diet and lifestyle. At baseline, participants were 50 years or older and included 40% women. After more than 8 years of follow-up, we expect to confirm 1,208 incident PD cases with their neurologists. We will comprehensively examine the associations between diet and lifestyle and risk of PD, focusing on dietary antioxidants, fat, caffeine, dairy products, estrogen use, obesity, physical activity, and non steroidal anti-inflammatory drugs (NSAIDs). Further, we will collect saliva samples from PD patients and selected controls without PD for genetic analysis. These results will be used to explore the PD associations with several common genetic polymorphisms and, for the first time, their interactions with several promising diet or lifestyle exposures. Many of the specific aims are novel and important but have been rarely examined in previous investigations. The findings will improve our understanding of the complex relationships among diet, lifestyle, gene-environment interaction, and PD etiology and may potentially contribute to successful PD prevention strategies.
Study Aims:
and lifestyle on PD risk.
Study Population: The NIH-AARP Diet and Health Study cohort.
Design:
Outcome Parameters: Physician confirmed PD diagnoses.
4,487 studies on the registry are indexed under Parkinson Disease; 1,082 are open to participants now.
This study's enrollment of 3,100 is above the median of 96 across 1,057 observational studies indexed under Parkinson Disease.
Browse Parkinson Disease studies →National Institute of Environmental Health Sciences (NIEHS) is the lead sponsor of 175 studies on the registry; 18 are open to participants now.
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Approximately 3,000 NIH-AARP Diet and Health Study participants who reported a Parkinson's disease (PD) diagnosis on the most recent survey (conducted 2004-2006)and 6,000 control subjects from the cohort who did not report a PD diagnosis.@@@
This study will be conducted within the infrastructure of the NIH-AARP Diet and Health Study; every participant in the AARP cohort will be eligible for the current investigation. Individuals with PD at baseline (prevalent cases) or with missing information on exposure variables are still eligible for the study, but may be excluded from specific analysis.
The proposed study does not require new recruitment.
EXCLUSION CRITERIA:
No children are included.
The analytic sample includes all participants who respond to the follow-up questionnaires and have non-missing values on the baseline surveys. Participants who reported PD before exposure assessment may be excluded from the analyses.
Diet and Health Study members who self-reported a Parkinson's disease (PD) diagnosis on a follow-up questionnaire, and randomly selected controls, will participate in the PAGE sub study.
Examine factors that increase or decrease risk of PD
Parkinson s disease diagnosis - we validated Parkinson s diagnosis by collecting and reviewing diagnostic information from study participants and their treating physicians. In addition, we collected saliva sample for genetic assays and additional exposure data for analyses.
Time frame: duration of study
This study is completed, as verified in Mar 2021. You cannot join it, but the record below documents what was studied.
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National Institute of Environmental Health Sciences (NIEHS)