With the arrival of autumn, when the sun is a little washed out and the cold begins to be felt, it is important to take Vitamin D with the diet or with supplements. In summer we don’t have this need. In fact, solar UV radiation (UVR) also initiates the first step in the synthesis of Vitamin D. Vitamin D is essential for the maintenance and development of healthy bones. Furthermore, it intervenes in numerous metabolic processes and can play an important role in improving depressive states or protecting against dangerous tumors. Many are unaware that Vitamin D in the fall could help protect us even from this serious illness. Conversely, Vitamin D deficiency has been linked to increased susceptibility to respiratory infections of viruses and bacteria.
Sun rays: risks / benefits
The time of exposure of the skin to the sun must be the right balance between potential risks (for example, melanoma) and potential benefits (the formation of Vitamin D). It is a difficult balance to calculate because it depends on many factors such as the latitude in which you live, the time of year in which the study is carried out or familiarity. The IARC (International Agency for Research on Cancer) has given important information on the risk of cancer due to exposure to solar radiation. However, these indications do not take into consideration recent researches just published, which complete and integrate our knowledge on the subject with important information (Young A et al, 2021).
Many are unaware that Vitamin D in the fall could help protect us from this serious disease
In a study just published in the prestigious Scientific Reports journal (Li X et al, 2021), scientists looked for an association between Covid-19 and Vitamin D. Working on the British biobank they considered 417,342 participants. Instead of evaluating the levels of Vitamin D in each sample (an analysis that is not very sensitive and with high variability) they estimated the levels of Vitamin D through a genetic analysis.
The results obtained suggest that vitamin D may protect against serious illness and death from COVID-19.
More specific studies are still needed to ensure that this evidence is put into practice at the clinical level. Until then, as Vitamin D supplements are safe and cheap, it is definitely advisable to take them and protect yourself from Vitamin D deficiency. This, in particular, with winter on the horizon. For any clarification and prescription of this vitamin we could ask our family doctor.
(We remind you to carefully read the warnings regarding this article, which can be consulted WHO”)