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Upper Respiratory Tract Infection Risk
Upper respitatory tract infections (URTIs) are sicknesses that mostly affect the lung and breathing capacities, and is the cause of many cold symptoms. Supplements that reduce the risk of developing URTIs are said to promote immunity.
This page is regularly updated, to include the most recently available clinical trial evidence.
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"Upper Respiratory Tract Infection Risk," Examine.com, published on 5 July 2013, last updated on 17 March 2022, https://examine.com/topics/upper-respiratory-tract-infection-risk/