Editing Vitamin deficiency (section)

==Defining deficiency==
A number of regions have published guidelines defining vitamin deficiencies and advising specific intakes for healthy people, with different recommendations for women, men, infants, the elderly, and during pregnancy and breast feeding including Japan, the [[European Union]], the United States, and Canada.<ref name=EFSA-Recommended/><ref name=DRITable/><ref name=JapanDRI/> These documents have been updated as research is published. In the US, [[Recommended Dietary Allowances]] (RDAs) were first set in 1941 by the Food and Nutrition Board of the [[National Academy of Sciences]]. There were periodic updates, culminating in the [[Dietary Reference Intake]]s.<ref name=DRI-History>{{cite web |url=https://www.ncbi.nlm.nih.gov/books/NBK208878/ |title=Chapter 4: A Brief Review of the History and Concepts of the Dietary Reference Intakes. In: Dietary Reference Intakes: Guiding Principles for Nutrition Labeling and Fortification.| publisher = The National Academies Press | year = 2003 | location = Washington, DC | pages = 56–78 | access-date= 9 February 2019}}</ref> Updated in 2016, the US [[Food and Drug Administration]] published a set of tables that define [[Estimated Average Requirements]] (EARs) and (RDAs).<ref name=DRITable/><ref name="FedReg2016">{{cite web|url=https://www.gpo.gov/fdsys/pkg/FR-2016-05-27/pdf/2016-11867.pdf |title=Federal Register, Food Labeling: Revision of the Nutrition and Supplement Facts Labels. FR page 33982|publisher=US Food and Drug Administration|date=27 May 2016}}</ref> RDAs are higher to cover people with higher than average needs. Together, these are part of Dietary Reference Intakes. For a few vitamins, there is not sufficient information to set EARs and RDAs. For these, an Adequate Intake is shown, based on an assumption that what healthy people consume is sufficient.<ref name=DRITable/> Countries do not always agree on the amounts of vitamins needed to safeguard against deficiency. For example, for vitamin C, the RDAs for women for Japan, the European Union (called Population Reference Intakes) and the US are 100, 95 and 75&nbsp;mg/day, respectively.<ref name=DRITable/><ref name=JapanDRI/><ref name=EFSAtables>{{cite web|url=https://www.efsa.europa.eu/sites/default/files/assets/DRV_Summary_tables_jan_17.pdf|title=Overview on Dietary Reference Values for the EU population as derived by the EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA)|publisher=European Food Safety Authority|date=1 September 2017|access-date=11 February 2019}}</ref> India sets its recommendation at 40&nbsp;mg/day.<ref>{{cite web |url=http://ninindia.org/DietaryGuidelinesforNINwebsite.pdf |title=Summary of Dietary Reference Values – version 4 – Dietary Guidelines for Indians |publisher=National Institute of Nutrition, India |date=2011}}</ref>