Colostrum is in news again and this time the story originates is farawayNew Zealandwhere in a recent clinical trial researchers found that taking bovine colostrum inhibits infections in the upper respiratory tract or URTI. The researchers conducted the double blind, placebo-controlled trial of 35 distance runners—15 of whom were women and 20 men—atMasseyUniversity. All the participants were between the ages of 35 and 58 and were observed by experts for a period of 12 weeks.


The research started with an examination of mucosal immunity. The scientists measured s-IgA levels in saliva before training at baseline, every month during supplements intake, and two weeks after the intervention period was over.


Results showed that s-IgA levels in participants had increased by 79 percent after 12 weeks of regular supplement consumption. The participants on placebo did not show any increase. The supplement-induced changes persisted even when the researchers adjusted figures for training volume and self-reporting of upper respiratory symptoms.


In the end, the researchers concluded that the increase could be attributed to colostrum supplements. At the same time, they suggested one should refrain from making broad claims because the size of the test group was small.


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