Author Topic: Vitamin A Deficiency May Thwart Tuberculosis Infection - Study Shows  (Read 546 times)

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Offline Naijaloaded

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Family members who live with someone with tuberculosis may be shielded against the highly infectious disease by taking vitamin A. A new study finds that many of those who develop TB are deficient in the nutrient.

In a study of 6,000 people in Lima, Peru, researchers found that those whose diets were lacking in vitamin A had a 10-fold increased risk of developing TB from an infected family member. Young people, between the ages of 10 and 19, were found to have 20 times the risk of developing tuberculosis through close exposure to an infected loved one.

Researchers at Harvard Medical School found that having a vitamin A deficiency, common among some 30 percent of the world’s population in mostly developing nations, was a potent predictor of TB disease risk.

They said supplementing peoples’ diets with vitamin A may be a powerful tool for preventing TB.

Megan Murray of Harvard's Department of Global Health and Social Medicine said investigators followed the participants who lived with someone with TB for one year. All agreed to have their blood drawn at the start of the study.

Over the course of the investigation, Murray said 192 people of the 6,000 became sick. Their blood samples, taken at the beginning of the study, were compared to those of other close family members who did not have TB.



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