http://www.efsa.europa.eu/ http://www.efsa.europa.eu/ don't appear to agree with you. They might be wrong of course. "EFSA Panel on Dietetic Products, Nutritio

http://www.efsa.europa.eu/ http://www.efsa.europa.eu/ don't appear to agree with you. They might be wrong of course. "EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) was asked to deliver an opinion on the scientific substantiation of a health claim related to vitamin D and contribution to the normal function of the immune system. The Panel considers that vitamin D is sufficiently characterised. Contribution to the normal function of the immune system is a beneficial physiological effect for children. The Panel had previously assessed a claim on vitamin D and contribution to the normal function of the immune system with a favourable outcome. The target population was the general population. The Panel considered that vitamin D plays a regulatory role in the functioning of the immune system. The Panel considers that the role of vitamin D in the functioning of the immune system applies to all ages, including children." https://www.efsa.europa.eu/sites/default/files/consultation/160321.pdf https://www.efsa.europa.eu/sites/default/files/consultation/... No magic involved as can be determined from a reading of the massive peer-reviewed literature regarding vitamin D.