Evidence supporting the use of: Isothiocyanates
For the body system: Lungs

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Isothiocyanates, a group of phytochemicals found abundantly in cruciferous vegetables such as broccoli, watercress, and Brussels sprouts, have been studied for their potential benefits to lung health. Scientific evidence suggests that isothiocyanates—especially sulforaphane—may help protect the lungs by inducing phase II detoxification enzymes and enhancing antioxidant defenses. Several in vitro and animal studies have shown that isothiocyanates can reduce oxidative stress and inflammation in lung tissue, which are key contributors to the development and progression of respiratory diseases like asthma and chronic obstructive pulmonary disease (COPD).

A few human studies also indicate that intake of cruciferous vegetables and their constituents may be associated with improved lung function and reduced risk of lung cancer, particularly among smokers. For example, sulforaphane has been observed to activate the NRF2 pathway, which regulates antioxidant and cytoprotective responses in lung cells. However, while preclinical data are promising, large-scale clinical trials directly linking isothiocyanate supplementation to improved lung health in humans are limited, and more research is needed for conclusive recommendations.

In summary, there is moderate scientific support for the role of isothiocyanates in promoting lung health, primarily through their antioxidant and anti-inflammatory actions, but the evidence is not yet robust enough for unequivocal clinical endorsement.

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Products containing Isothiocyanates

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