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Vitamin C, zinc can’t fight off COVID-19 symptoms, new study suggests

Do vitamin C and zinc help fight off COVID-19? A new study says that’s not the case

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New data suggests a COVID-19 variant doesn’t account for new COVID-19 cases.

This 2020 electron microscope image provided by the National Institute of Allergy and Infectious Diseases — Rocky Mountain Laboratories shows SARS-CoV-2 virus particles which cause COVID-19, isolated from a patient in the U.S., emerging from the surface of cells cultured in a lab. A British mathematician said all the COVID-19 particles in the world are so small they could fit in a Coke can.

NIAID-RML via Associated Press

A new study suggests that vitamin C and zinc don’t help fight off COVID-19, even when they’re taken at high doses.

What’s going on?

The study — published in mid-February in JAMA Network Open — found that vitamin C and zinc don't lessen or fight off COVID-19 symptoms.

  • This study was the first randomized clinical trial that tested the two supplements against COVID-19, according to CNN.

Researchers reviewed 214 adults with confirmed COVID-19 infections, per Medical Xpress. They monitored how people responded to 10 days of zinc gluconate (50 milligrams/mg), 10 days of vitamin C (8,000 mg), both or usual care.

  • The study’s findings were that the two supplements did not benefit people who were isolating with COVID-19.
  • Researchers stopped the study early because “the findings were so unimpressive,” according to CNN.

“Unfortunately, these two supplements failed to live up to their hype,” wrote two of the study’s authors, Dr. Erin Michos of John Hopkins and Houston Methodist’s Dr. Miguel Cainzos-Achirica.

Other vaccines

Back in September, a new study from the University of Chicago suggested that a lack of vitamin D could create more severe coronavirus cases, which I wrote about for the Deseret News.

  • The study found that an untreated vitamin D deficiency could increase a patient’s likelihood of testing positive for COVID-19 by 77%, per Yahoo News.
  • “In this single-center, retrospective cohort study, likely deficient vitamin D status was associated with increased COVID-19 risk, a finding that suggests that randomized trials may be needed to determine whether vitamin D affects COVID-19 risk,” the study said, as I wrote about for the Deseret News.