Vitamin D reduces cold severity
Influence of Vitamin D Supplementation by Simulated Sunlight or Oral D3 on Respiratory Infection during Military Training.
We explored the connection between vitamin D levels and upper respiratory tract infections (URTIs) among military recruits during their training. This observation spanned across different seasons and included over 1,600 recruits. Our aim was to understand how achieving sufficient vitamin D levels could potentially impact the frequency and severity of colds among physically active individuals.
In an additional phase of the research, we conducted a randomized controlled trial with 250 male recruits. They received either a placebo, simulated sunlight exposure, or oral vitamin D3 supplements during winter. This comparison allowed us to see if these methods effectively increased vitamin D levels to a sufficient status of 25(OH)D at 50 nmol/L or higher.
Notably, our findings showed that only 21% of recruits had adequate vitamin D during winter, yet those who did were 40% less likely to suffer from URTIs. Furthermore, both vitamin D supplementation strategies similarly helped nearly all participants achieve sufficient levels. Vitamin D supplementation notably reduced the severity of URTI symptoms by 15% and the number of days with URTIs by 36% compared to placebo.
While the supplementation strategies did not significantly alter other immune factors, such as salivary secretory immunoglobulin A, the overall reduction in respiratory infections indicates a beneficial effect of maintaining vitamin D sufficiency during military training.
Vitamin C benefits
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Ideal composition. A harmonious, balanced mix, my child appreciates it during the cold season or at the onset of illness; it truly helps! Vitamin C isn't merely ascorbic acid, but rather in its natural form, amla extract, is pivotal in Ayurveda. This supplement boasts a high vitamin C content and acts as a potent antioxidant. The zinc is highly digestible, ideal for children. Though an extra dose of vitamin D is necessary, especially in cloudy seasons. What's crucial is that it excludes main allergens like gluten and sugar. My daughter enjoys the pleasant gummy taste, and I give her one. A reliable manufacturer, I highly recommend it. Thank you, and stay healthy!