Researchers track cancer rates years after vitamin trial ends

NCT ID NCT00342654

First seen Nov 01, 2025 · Last updated Jun 16, 2026 · Updated 36 times

Summary

This study follows over 32,000 people from Linxian, China, who previously took part in a nutritional trial testing vitamins and minerals to prevent esophageal and stomach cancer. The original trial found that certain supplements reduced cancer risk and deaths. Now, researchers are continuing to monitor participants for several more years to see if those benefits last, and to collect blood samples and health data for further research.

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Contacts and locations

Locations

  • Cancer Institute and Hospital, Chinese Academy of Medical Sciences

    Beijing, China

Conditions

Explore the condition pages connected to this study.