Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Vitamin E has been investigated for its potential role in supporting the respiratory system, particularly due to its antioxidant properties. As a fat-soluble antioxidant, vitamin E helps protect cell membranes from oxidative damage caused by free radicals, which are implicated in inflammatory respiratory conditions. Several observational studies have explored associations between vitamin E intake and lung function. For example, higher dietary vitamin E intake has been linked to better pulmonary function and a lower risk of asthma in some populations. However, randomized controlled trials (RCTs) provide mixed results. Some RCTs in asthmatic individuals and those with chronic obstructive pulmonary disease (COPD) have not demonstrated significant improvements in respiratory symptoms or function with vitamin E supplementation. Additionally, research into the prevention or mitigation of air pollution–induced lung effects has produced inconclusive findings regarding vitamin E's efficacy. Overall, while there is a scientific rationale for vitamin E’s antioxidant role in lung health and some supportive observational evidence, robust clinical evidence from intervention trials is lacking. Thus, vitamin E is not broadly recommended for respiratory support except in cases of deficiency or specific clinical indications.

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Other ingredients that support Respiratory System

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