Decades-Long study tracks vitamin effects on cancer in High-Risk region
NCT ID NCT00342654
First seen Jun 24, 2026 · Last updated Jul 17, 2026 · Updated 5 times
Summary
This study follows up on over 32,900 people from Linxian, China, who took part in a nutritional trial between 1985 and 1991. Researchers are tracking cancer cases and deaths to see if earlier vitamin and mineral supplements had lasting effects. They are also collecting blood samples and conducting surveys to better understand links between nutrition, genetics, and disease.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Cancer Institute and Hospital, Chinese Academy of Medical Sciences
Beijing, China
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