Vitamin D levels in obstructive lung diseases

What is your opinion on vitamin D supplementation in patients with obstructive lung diseases? Is it necessary in all patients in central and northern regions of Europe and America in winter? Is there any justification for measuring vitamin D levels?

Jadwiga Wedzicha: I have, in the past, performed some research in COPD on vitamin D and we did not see any relationship between vitamin D levels and exacerbation or exacerbation prevention. I think one of the problems of all the data is that it depends on the starting vitamin D levels. However, I do not personally recommend vitamin D supplementation but I do recommend a balanced diet. I think if patients have a good balanced diet, particularly in the winter months, then that should manage their vitamin D levels very well.