International guidelines
United Kingdom
Published by:National Health Service England
Last published:2022
Published by:UK Food Standards Agency
Last published:2021
Published by:Public Health England
Last published:2018
North America
Published by:Centers for Disease Control and Prevention
Last published:2018
Published by:US Food and Drug Administration
Last published:2013 (reaffirmed 2021)
Rest of the world
Published by:The North Atlantic Treaty Organization (NATO)
Last published:2014
Published by:World Health Organization
Last published:2008
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