International guidelines

United Kingdom

Vitamin B12 deficiency in over 16s: diagnosis and management

Published by:National Institute for Health and Care Excellence

Last published:2024

Diagnosis of B12 and folate deficiency

Published by:British Society for Haematology

Last published:2014

Europe

ESPEN guideline on clinical nutrition in inflammatory bowel disease

Published by:European Society for Clinical Nutrition and Metabolism

Last published:2023

ESPEN micronutrient guideline

Published by:European Society for Clinical Nutrition and Metabolism

Last published:2022

North America

Vitamin B12: fact sheet for health professionals

Published by:Office of Dietary Supplements, National Institutes of Health

Last published:2024

Cobalamin (vitamin B12) and folate deficiency

Published by:Guidelines and Protocols Advisory Committee, British Columbia

Last published:2023

Dietary guidelines for Americans 2020-2025

Published by:US Department of Health and Human Services; US Department of Agriculture

Last published:2020

Clinical practice guidelines for the perioperative nutritional, metabolic, and nonsurgical support of patients undergoing bariatric procedures - 2019 update

Published by:American Association of Clinical Endocrinologists; Obesity Society; American Society for Metabolic & Bariatric Surgery; Obesity Medicine Association; American Society of Anesthesiologists

Last published:2019

Oceania

Nutrient reference values for Australia and New Zealand

Published by:Australian Government National Health and Medical Research Council and New Zealand Ministry for Health

Last published:2017

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