We can boost sound immune system thanks to certain food supplements, in particular thanks to vitamin D. The radiation of the sun triggering the synthesis of vitamin D, a Japanese study published in the “Journal of Clinical Nutrition” even suggested that flu epidemics in winter were due to a vitamin D deficiency, linked to less solar radiation during this season. And that supplementation would be as effective as the vaccine in preventing the disease.
To boost your immune system, you can also use other substances such as probiotics, zinc which strengthens the defences, vitamins and minerals which allow the body to better defend itself, royal jelly and bee products (propolis, pollen), plants such as ginseng, echinacea or andrographis. For a personalized program, it is better to seek advice from your pharmacist or doctor.