Vit-C is a potent antioxidant and acts as a cofactor in many biosynthetic pathways. It contributes to immune defense system by supporting various cellular processes and functions. For details, one can go through a paper by A C Carr et al., 2017 (doi: 10.3390/nu9111211). Vit-D supplementation studies have shown it's beneficial effects on human immune system. For details, please go through a paper by Barbara Prietl et Al., 2013 (doi: 10.3390/nu5072502).

Good question

Agreed with Dr Arbind k. Chaudhary

Please look at the following below links which may help you in your analysis:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2906676/pdf/nihms185109.pdf

https://www.ndtv.com/health/immunity-boosting-tips-for-monsoons-5-nutrients-that-protect-you-from-falling-sick-2262074

Thanks

please see this link

https://support.nlm.nih.gov/support/create-case/?category=plabs&a=pubmed&from=https%3A%2F%2Fpubmed.ncbi.nlm.nih.gov%2F23830380%2F&p=abstract&s=F4FB699CC85459A1_0214SID

Thank you all for sharing your knowledge.

Please go through the following RG links.

Article Vitamin C and Immune Function

Article Vitamin D and the Immune System

Please have a look at the attachment:

Please follow the link below:

Article Vitamin D and immunity

See the link below

https://pubmed.ncbi.nlm.nih.gov/23830380/

Please see the link Article Vitamin C and Immune Function

Article Vitamin D and the Immune System