Danish researchers, at Copenhagen University Hospital and the University of Copenhagen, discovered a hyperlink between a vitamin Ok deficiency and poor lung well being.
Around 4,000 individuals, aged 24 to 77, took a lung operate take a look at (referred to as spirometry) and gave blood samples.
The NHS ascertains {that a} spirometry take a look at helps "diagnose and monitor certain lung conditions by measuring how much air you can breathe out in one forced breath".
The individuals additionally answered questions on their well being and way of life selections.
When trying on the knowledge, the scientists discovered {that a} low blood marker of vitamin Ok had decrease lung capability on the spirometry take a look at.
Participants with decrease ranges of vitamin Ok have been additionally extra more likely to say that they had persistent obstructive pulmonary illness (COPD), asthma or wheezing.
Dr Torkil Jespersen mentioned: "We already know that vitamin K has an important role in the blood.
"And analysis is starting to indicate that it’s additionally essential in coronary heart and bone well being, however there’s been little or no analysis vitamin Ok and the lungs."
Dr Jespersen added: "To our data, that is the primary examine on vitamin Ok and lung operate in a big normal inhabitants.
"Our results suggest that vitamin K could play a part in keeping our lungs healthy."
Dr Jespersen mentioned extra analysis is required to see if these with lung situations would profit from taking vitamin Ok dietary supplements.
The researchers are already engaged on a big scientific trial evaluating vitamin Ok supplementation with a placebo to have a look at any results on coronary heart and bone well being.
Dr Apostolos Bossios, the Secretary of the European Respiratory Society’s meeting on Airway ailments, bronchial asthma, COPD, and persistent cough, commented on the examine.
"This study suggests that people with low levels of vitamin K in their blood may have poorer lung function," he mentioned.
"Further research will help us understand more about this link and see whether increasing vitamin K can improve lung function or not."
Foods wealthy in vitamin Ok:
The research findings are printed within the journal ERJ Open Research.
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