@Tres13 Plenty of money is made from selling vitamin supplements in the UK. The trouble is that this is a very lightly regulated market and the products most widely available to UK consumers have not been subjected to standardised clinical trials. Therefore they cannot be sanctioned by NICE.
Also having sufficient Vitamin D levels may play a role in reducing cancers such as breast cancer and also helps to combat depression which is a big money-maker for the medical and pharmaceutical industry.
I think the answer lies in the first body paragraph and the summary: Vitamin D is not recommended for preventing Covid-19; because it does not do that. Nor does it prevent Influenza and the common Cold; cousins of CoVid.
Nevertheless it does help the body withstand such virii; and the paper explains this point.
I suppose NICE and all the health services wanted to prevent false hopes that stuffing yourself with the vitamin would keep you completely safe from infection, when what it really does is improve your chances of infection being minor and recovery being full.
As we've known for years with illnesses like the cold.
@MartinII It would have been more scandalous had everyone been lulled into believing a vitamin diet would prevent you being infected with SARS-CoVid-19. What Walter posts shows clearly that hazard.
They say Vitamin D would reduce the risk of serious infection, (as it does with some other corona virii diseases); but they were right not to give the Press and others of the Great Unthinking, the chance of twisting the meaning from reduction of severity to complete prevention.
@MartinII Maybe but i know who I'd rather believe, though not necessarily unquestioningly. I am not a doctor or biologist, but neither are newspaper editors.
