Common Vitamin Shows Surprising Result in Pre-Leukemia Trial
Summary
A clinical trial called EVITA phase 2 studied the effects of taking daily vitamin C on people with precancerous blood disorders. The trial found that vitamin C raised blood vitamin levels to normal and was linked to better survival after three years, but it did not clearly stop abnormal blood cells from growing or prove it prevents leukemia.Key Facts
- The study involved 109 patients with precancerous blood conditions or early blood cancers.
- Participants took either 1,000 mg of vitamin C daily or a placebo without vitamin C for 12 months.
- Neither the patients nor the researchers knew who had the vitamin C until the study ended (this is called a blinded trial).
- Most patients started with low vitamin C levels, which improved in those taking supplements.
- Patients receiving vitamin C had fewer negative health events during the study.
- Changes in immune signals were seen that might help explain better health outcomes.
- Participants who took vitamin C were more likely to be alive after about three years than those who took placebo.
- The trial did not prove vitamin C prevents leukemia or fully explains the survival benefits seen.
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