Vitamin c
this journal article is about vitamin C in the first section you can find definition about what is vitamin C and where you can find it.In the second section you can see the causes of vitamin deficiency and some of the diseases associated with this deficiency.
In the third part the writer mention some dietary recommendation for example( The RDA for teenagers is based on gender: 75 and 65 mg/d for boys and girls 13–17 y of age, respectively ). then he mentioned some food sources you can find vitamin C in them. After that he mention the clinical use of the vitamin.
at the end he spoke about some recent research about vitamin C.
https://academic.oup.com/advances/article/5/1/16/4616647?searchresult=1