Weekly and daily vitamin D doses were effective for respiratory tract infections, but monthly doses were not.

“it is clear that people who are vitamin D deficient so these are people whose vitamin D level levels have been measured oftentimes have diminished immune system function and are more prone to acute respiratory tract infections”

“Analysis of 25 randomized controlled trials from around the world found that vitamin D supplementation cut the risk of respiratory tract infections by 50% in people that were deficient and by 10% in people with normal vitamin D levels.”

“Analysis of 25 randomized controlled trials from around the world found that vitamin D supplementation cut the risk of respiratory tract infections by 50% in people that were deficient and by 10% in people with normal vitamin D levels.”

“A meta-analysis of 25 randomized controlled trials across 14 countries showed vitamin D supplementation reduced respiratory infections by 42% in vitamin D-deficient individuals and approximately 10% in those already within normal ranges.”

“Boosting vitamin D levels may protect against respiratory infections.”

“Vitamin D supplementation cut infection risk by 50% in people that were deficient & 10% in people with normal levels https://t.co/IPpcKcvFHh”

“there is data from 25 different randomized control trials from around the world showing that daily or weekly supplementation of vitamin D reduced the risk of acute respiratory infection by more than 50% in people with the lowest vitamin D levels at baseline”

“A meta-analysis of 25 randomized control trials has found that vitamin D supplementation can decrease respiratory tract infections by more than 50% in people with vitamin D deficiency and by 10% in people that were already vitamin D sufficient.”

“if we have, as you mentioned, meta-analyses of many, many, many, you know, over 25, different randomized controlled trials, showing vitamin D supplementation prevents respiratory tract infections, you know, in people that are vitamin D deficient between 50% to 70%, and even still had an effect and people that had normal, sufficient levels of vitamin D, maybe we can talk about what those are.”

“And what was so interesting about those meta-analyses was that they found weekly doses, daily doses, worked, but monthly doses did not in terms of protecting against key respiratory tract infections.”

“showed that supplementation with vitamin D decreased acute chest infections by 50% significantly in that study, and also in the long aging health study called TILDA in Ireland showed that vitamin D supplementation was beneficial.”

“Martineau who was the lead author on that British Medical Journal, meta-analysis, that was done a number of years ago now, showed that supplementation with vitamin D decreased acute chest infections by 50% significantly in that study”