It’s fall in the Northern Hemisphere, which means the days are shortening, the sun is less intense and we are staying inside more because of the cooler weather and bundle up when we do go out.
Perhaps not coincidentally, it is also the time of the year we traditionally refer to as the flu season.
Because, it is also the time when our vitamin D levels are at their lowest, because it is created when the sun converts cholesterol in our bodies to vitamin D.
Another study has been released stating that low vitamin D levels may factor into susceptibility to flu, colds and COVID. Read it before the health experts call it false information.
From the report: particularly note the highlighted line in the second paragraph:
In this publication, we will demonstrate that vitamin D3 deficiency, which is a well-documented worldwide problem [13–19,179], is one of the main reasons for severe courses of SARS-CoV-2 infections. The fatality rates correlate well with the findings that elderly people, black people and people with comorbidities show very low vitamin D3 levels [16,20–22]. Additionally, with only a few exceptions, we are facing the highest infection rates in the winter months and in northern countries, which are known to suffer from low vitamin D3 levels due to low endogenous sun-triggered vitamin D3 synthesis [23–26] …
Long before the SARS-CoV-2 pandemic, an increasing number of scientific publications showed the effectiveness of a sufficient vitamin D3 blood level in curing many of the human diseases caused by a weak or unregulated immune system [37,57–59]. This includes all types of virus infections [43,60–68,180], with a main emphasis on lung infections that cause ARDS [69–71], as well as autoimmune diseases [45,62,72,73]. However, routine vitamin D3 testing and supplementation are still not established today. Unfortunately, it seems that the new findings about vitamin D3 have not been well accepted in the medical community. Many official recommendations to define vitamin D3 deficiency still stick to the 20 ng/ml established 100 years ago to cure rickets .
Additionally, many recommendations for vitamin D3 supplementation are in the range of 5 to 20 μg per day (200 to 800 international units), which is much too low to guarantee the optimal blood level of 40–60 ng/ml.
READ: COVID-19 mortality risk correlates inversely with vitamin D3 status, and a mortality rate close to zero could theoretically be achieved at 50 ng/ml 25(OH)D3: Results of a systematic review and meta-analysis
Vitamin D supplements are cheap and small and studies suggest taking it regularly/daily is the best course of action.