Vitamin B 12 Deficiency

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19 Substances Researched for Vitamin B 12 Deficiency
7 Problem Substances Researched for Vitamin B 12 Deficiency
2 Therapeutic Actions Researched for Vitamin B 12 Deficiency
1 Problematic Actions Researched for Vitamin B 12 Deficiency
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View the Evidence:
105 Abstracts with Vitamin B 12 Deficiency Research

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Pubmed Data : J Gerontol A Biol Sci Med Sci. 2002 Sep;57(9):M583-7. PMID: 12196495
Study Type : Meta Analysis
Additional Links
Substances : Vitamin B-12
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Pubmed Data : Mol Cell Endocrinol. 2017 Jan 9. Epub 2017 Jan 9. PMID: 28081987
Study Type : Meta Analysis
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Pubmed Data : J Am Coll Nutr. 2020 Jul 23:1-11. Epub 2020 Jul 23. PMID: 32702250
Study Type : Meta Analysis
Additional Links
Substances : Vitamin B12
Additional Keywords : Risk Factors
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Pubmed Data : Endocrine. 2019 Aug 28. Epub 2019 Aug 28. PMID: 31463884
Study Type : Meta Analysis, Review
Additional Links
Additional Keywords : Increased Risk
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Pubmed Data : Am J Clin Nutr. 2005 Oct;82(4):887-93. PMID: 20108213
Study Type : Human Study
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Pubmed Data : Prim Care Companion CNS Disord. 2019 Oct 10 ;21(5). Epub 2019 Oct 10. PMID: 31617966
Study Type : Human Study
Additional Links
Additional Keywords : Risk Factors
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Pubmed Data : Am J Cardiol. 2004 Oct 1;94(7):975-7. PMID: 15464695
Study Type : Human Study
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Pubmed Data : J Hum Nutr Diet. 2019 Feb 28. Epub 2019 Feb 28. PMID: 30821057
Study Type : Human Study
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Br J Nutr. 2019 Jun ;121(11):1303-1312. Epub 2019 Apr 2. PMID: 30935438
Study Type : Human Study
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Pubmed Data : Endocr Metab Immune Disord Drug Targets. 2022 Jun 27. Epub 2022 Jun 27. PMID: 35761487
Study Type : Human Study
Additional Links
Additional Keywords : Risk Factors
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Pubmed Data : Indian J Gastroenterol. 2022 Jan 11. Epub 2022 Jan 11. PMID: 35015200
Study Type : Human Study
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Pubmed Data : J Pediatr Hematol Oncol. 2010 May;32(4):319-22. PMID: 20404749
Study Type : Human Study
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Pubmed Data : Asia Pac J Clin Nutr. 2021 ;30(1):75-86. PMID: 33787043
Study Type : Human Study
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Pubmed Data : Parkinsonism Relat Disord. 2020 Mar 16 ;73:19-22. Epub 2020 Mar 16. PMID: 32203914
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Pharmacological Actions : Neuroprotective Agents
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Pubmed Data : J Clin Endocrinol Metab. 2019 Oct 1 ;104(10):4837-4847. PMID: 30920623
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Additional Keywords : Risk Factors
Problem Substances : Metformin
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Cureus. 2017 Aug 18 ;9(8):e1577. Epub 2017 Aug 18. PMID: 29057189
Study Type : Human Study
Additional Links
Additional Keywords : Risk Factors
Problem Substances : Metformin
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Pubmed Data : J Assoc Physicians India. 2016 Jul ;64(7):22-26. PMID: 27759338
Study Type : Human Study
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Front Endocrinol (Lausanne). 2019 ;10:414. Epub 2019 Jun 27. PMID: 31316466
Study Type : Human Study
Additional Links
Additional Keywords : Risk Factors
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Pubmed Data : Nutrients. 2020 Aug 10 ;12(8). Epub 2020 Aug 10. PMID: 32785129
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Additional Keywords : Risk Factors
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Br J Nutr. 2021 Dec 13:1-22. Epub 2021 Dec 13. PMID: 34895361
Study Type : Human Study
Additional Links
Additional Keywords : Risk Factors
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Pubmed Data : Int J Cancer. 2017 09 15 ;141(6):1120-1129. Epub 2017 Jun 21. PMID: 28568053
Study Type : Human Study
Additional Links
Additional Keywords : Increased Risk
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Cureus. 2020 Feb 13 ;12(2):e6976. Epub 2020 Feb 13. PMID: 32206454
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Pharmacological Actions : Neuroprotective Agents
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Pubmed Data : J Nutr Health Aging. 2010 Mar;14(3):219-23. PMID: 20191257
Study Type : Human Study
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Pubmed Data : Minerva Med. 2017 Nov 7. Epub 2017 Nov 7. PMID: 29115801
Study Type : Human Study
Additional Links
Additional Keywords : Risk Factors
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Pubmed Data : Niger J Clin Pract. 2017 Jan ;20(1):99-105. PMID: 27958255
Study Type : Human Study
Additional Links
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Pubmed Data : Clin Ther. 2003 Dec;25(12):3124-34. PMID: 14749150
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
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Pubmed Data : Mol Neurobiol. 2017 03 ;54(2):1278-1284. Epub 2016 Feb 3. PMID: 26843105
Study Type : Human Study
Additional Links
Additional Keywords : Risk Factors
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Int J Mol Sci. 2016 Jun 30 ;17(7). Epub 2016 Aug 30. PMID: 27376276
Study Type : Human Study
Additional Links
Additional Keywords : Risk Factors
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Br J Nutr. 2021 Dec 16:1-25. Epub 2021 Dec 16. PMID: 34913420
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Pharmacological Actions : Neuroprotective Agents
Additional Keywords : Risk Factors
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Pubmed Data : J Am Med Dir Assoc. 2008 Mar;9(3):162-7. PMID: 18294598
Study Type : Human Study
Additional Links
Additional Keywords : RDA Ineffective
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Pubmed Data : Gastroenterol Clin Biol. 1983 Apr ;7(4):381-4. PMID: 6135642
Study Type : Human Study
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Pubmed Data : Exp Gerontol. 2017 Sep ;95:136-140. Epub 2017 May 23. PMID: 28549839
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Additional Keywords : Risk Factors
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Pubmed Data : Psychiatry Res. 2017 08 ;254:232-237. Epub 2017 Apr 21. PMID: 28477545
Study Type : Human Study
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Neuropsychiatr Dis Treat. 2014 ;10:1671-5. Epub 2014 Sep 9. PMID: 25228807
Study Type : Human Study
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Pubmed Data : N Z Med J. 2016 Jun 10 ;129(1436):67-75. Epub 2016 Jun 10. PMID: 27355231
Study Type : Human Study
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Pubmed Data : Arch Toxicol. 2011 Jan 26. Epub 2011 Jan 26. PMID: 15911731
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
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Pubmed Data : Clin Nutr ESPEN. 2019 Apr ;30:199-203. Epub 2019 Feb 12. PMID: 30904222
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Additional Keywords : Increased Risk
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Sultan Qaboos Univ Med J. 2020 Feb ;20(1):e90-e94. Epub 2020 Mar 9. PMID: 32190375
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Additional Keywords : Risk Factors
Problem Substances : Metformin
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : SAGE Open Med. 2019 ;7:2050312119853433. Epub 2019 May 23. PMID: 31205703
Study Type : Human Study
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Sci Prog. 2021 Apr-Jun;104(2):368504211007667. PMID: 33821692
Study Type : Human Study
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Pubmed Data : Child Adolesc Ment Health. 2020 Apr 18. Epub 2020 Apr 18. PMID: 32304285
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Additional Keywords : Increased Risk
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Pubmed Data : Phytother Res. 2008 Nov;22(11):1477-81. PMID: 18655403
Study Type : Human Study
Additional Links
Substances : B-complex, Vitamin B-12
Additional Keywords : Diseases that are Linked
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Pubmed Data : Clin Chim Acta. 2010 Mar;411(5-6):411-5. Epub 2009 Dec 16. PMID: 20026019
Study Type : Human Study
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Pubmed Data : Neurol Sci. 2018 Jun ;39(6):1009-1014. Epub 2018 Mar 8. PMID: 29520674
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Additional Keywords : Risk Factors
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Pubmed Data : Health Care Women Int. 2018 Feb 27:1-10. Epub 2018 Feb 27. PMID: 29485366
Study Type : Human Study
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Pubmed Data : Ann Nutr Metab. 2018 Mar 29 ;72(4):265-271. Epub 2018 Mar 29. PMID: 29597190
Study Type : Human Study
Additional Links
Additional Keywords : Risk Factors
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Indian J Endocrinol Metab. 2019 Mar-Apr;23(2):211-214. PMID: 31161105
Study Type : Human Study
Additional Links
Additional Keywords : Risk Factors
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Nutrients. 2018 Apr 2 ;10(4). Epub 2018 Apr 2. PMID: 29614799
Study Type : Human Study
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Pubmed Data : Indian J Community Med. 2020 Oct-Dec;45(4):399-404. Epub 2020 Oct 28. PMID: 33623189
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Additional Keywords : Risk Factors
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Pubmed Data : Brain Nerve. 2009 Sep;61(9):1069-73. PMID: 19803406
Study Type : Human Study
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Pubmed Data : J Neurol. 2008 Mar;255(3):353-9. Epub 2008 Mar 20. PMID: 18350363
Study Type : Human Study
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Pubmed Data : Am J Gastroenterol. 2001 Mar;96(3):745-50. PMID: 11280545
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Additional Keywords : Diseases that are Linked
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Pubmed Data : J Spinal Cord Med. 2003;26(2):116-21. PMID: 12828286
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Additional Keywords : Diseases that are Linked
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Pubmed Data : Clin Chem Lab Med. 2008;46(9):1265-9. PMID: 18636794
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
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Pubmed Data : Acta Psychiatr Scand. 1988 Jul;78(1):8-10. PMID: 3176999
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
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Pubmed Data : J Nutr Health Aging. 2002;6(4):254-60. PMID: 12486445
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Additional Keywords : Diseases that are Linked
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Pubmed Data : J Med Food. 2015 Oct 20. Epub 2015 Oct 20. PMID: 26485478
Study Type : Human Study
Additional Links
Substances : Chlorella (Algae)
Therapeutic Actions : Dietary Modification: Vegetarian
Additional Keywords : Supplementation
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : PLoS One. 2016 ;11(1):e0146797. Epub 2016 Jan 22. PMID: 26799654
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Pharmacological Actions : Antioxidants
Additional Keywords : Increased Risk, Risk Factors
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Nutrients. 2022 Apr 2 ;14(7). Epub 2022 Apr 2. PMID: 35406106
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Pharmacological Actions : Neuroprotective Agents
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Pubmed Data : Ceska Slov Farm. 2002 Nov;51(6):310-2. PMID: 12501494
Study Type : Human Study
Additional Links
Substances : Vitamin B-12
Therapeutic Actions : Dietary Modification: Vegetarian
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Pubmed Data : Mol Nutr Food Res. 2017 May ;61(5). Epub 2017 Feb 9. PMID: 27981743
Study Type : Human Study
Additional Links
Substances : Whey
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Proc (Bayl Univ Med Cent). 2019 Oct ;32(4):589-592. Epub 2019 Jul 30. PMID: 31656431
Study Type : Human: Case Report
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Pubmed Data : Gen Hosp Psychiatry. 2012 Sep-Oct;34(5):578.e7-8. Epub 2012 Jan 9. PMID: 22227032
Study Type : Human: Case Report
Additional Links
Substances : Vitamin B-12
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Pubmed Data : Pan Afr Med J. 2020 ;37:280. Epub 2020 Nov 26. PMID: 33598094
Study Type : Human: Case Report
Additional Links
Problem Substances : Metformin
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Pubmed Data : J Med Case Reports. 2009;3:9295. Epub 2009 Nov 24. PMID: 20062784
Study Type : Human: Case Report
Additional Links
Substances : Vitamin B-12
Additional Keywords : Diseases that are Linked
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Pubmed Data : BMJ Case Rep. 2019 May 14 ;12(5). Epub 2019 May 14. PMID: 31092496
Study Type : Human: Case Report
Additional Links
Substances : Vitamin B-12
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Pubmed Data : J Assoc Genet Technol. 2021 ;47(4):218-223. PMID: 34897112
Study Type : Human: Case Report
Additional Links
Additional Keywords : False Positives, Risk Factors
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Pubmed Data : J Clin Sleep Med. 2019 Sep 15 ;15(9):1365-1367. PMID: 31538608
Study Type : Human: Case Report
Additional Links
Additional Keywords : Risk Factors
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Pubmed Data : J Clin Sleep Med. 2019 Aug 14. Epub 2019 Aug 14. PMID: 31482793
Study Type : Human: Case Report
Additional Links
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Indian J Pharmacol. 2012 May ;44(3):421-2. PMID: 22701262
Study Type : Human: Case Report
Additional Links
Problem Substances : Risperidone
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Pubmed Data : J Diet Suppl. 2020 Dec 21:1-5. Epub 2020 Dec 21. PMID: 33342334
Study Type : Human: Case Report
Additional Links
Substances : Vitamin B12
Additional Keywords : Risk Factors
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Pubmed Data : Rinsho Shinkeigaku. 2016 Mar 8 ;56(2):116-9. Epub 2016 Jan 21. PMID: 26797484
Study Type : Human: Case Report
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Neural Regen Res. 2019 Jul ;14(7):1247-1254. PMID: 30804256
Study Type : Animal Study
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Pubmed Data : J Nutr Sci Vitaminol (Tokyo). 2002 Oct;48(5):325-31. PMID: 12656203
Study Type : Animal Study
Additional Links
Substances : Chlorella (Algae)
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Pubmed Data : Nippon Ganka Gakkai Zasshi. 1991 Feb;95(2):158-64. PMID: 2053526
Study Type : Animal Study
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Pubmed Data : J Agric Food Chem. 2018 Dec 20. Epub 2018 Dec 20. PMID: 30572705
Study Type : Animal Study
Additional Links
Additional Keywords : Natural Versus Synthetics
Problem Substances : Cyanocobalamin
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Medicina (Kaunas). 2023 May 28 ;59(6). Epub 2023 May 28. PMID: 37374248
Study Type : Animal Study
Additional Links
Pharmacological Actions : Hepatoprotective
Additional Keywords : Plant Extracts
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Pubmed Data : Metab Brain Dis. 2018 Aug 9. Epub 2018 Aug 9. PMID: 30094804
Study Type : Animal Study
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : J Food Sci Technol. 2021 Nov ;58(11):4270-4281. Epub 2020 Nov 25. PMID: 34538910
Study Type : Animal Study
Additional Links
Substances : Chlorella (Algae)
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Pubmed Data : J Appl Microbiol. 2009 Feb;106(2):467-73. PMID: 19200314
Study Type : Animal Study
Additional Links
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Pubmed Data : Mol Cell Biochem. 2020 May ;468(1-2):83-96. Epub 2020 Mar 18. PMID: 32189172
Study Type : Animal Study
[+]
Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Antioxidants (Basel). 2021 Jun 15 ;10(6). Epub 2021 Jun 15. PMID: 34203911
Study Type : Animal Study
Additional Links
Substances : Vitamin B12
Pharmacological Actions : Neuroprotective Agents
Additional Keywords : Risk Factors
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Pubmed Data : J Food Biochem. 2019 Sep 9:e13038. Epub 2019 Sep 9. PMID: 31502254
Study Type : Animal Study
Additional Links
Substances : Spirulina
Therapeutic Actions : Dietary Modification: Vegetarian
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Pubmed Data : Food Funct. 2016 Sep 14 ;7(9):3910-9. Epub 2016 Aug 16. PMID: 27528436
Study Type : Animal Study
Additional Links
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Redox Biol. 2017 04 ;11:21-29. Epub 2016 Nov 3. PMID: 27840283
Study Type : Animal Study
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Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : EBioMedicine. 2021 Nov ;73:103676. Epub 2021 Nov 6. PMID: 34749301
Study Type : Animal Study
Additional Links
Additional Keywords : Risk Factors
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Pubmed Data : Maturitas. 2016 Aug 16. Epub 2016 Aug 16. PMID: 27574726
Study Type : Review
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Pubmed Data : J Agric Food Chem. 1998 Jan 19;46(1):206-210. PMID: 10554220
Study Type : In Vitro Study
Additional Links
Anti Therapeutic Actions : Microwave Cooking
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Pubmed Data : J R Soc Med. 1992 Nov;85(11):686-7. PMID: 1474554
Study Type : Commentary
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Pubmed Data : J Nepal Health Res Counc. 2023 Mar 10 ;20(3):702-707. Epub 2023 Mar 10. PMID: 36974860
Study Type : Review
Additional Links
Substances : Vitamin B-12
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Pubmed Data : J Bacteriol. 2003 Sep;185(18):5643-7. PMID: 12949118
Study Type : In Vitro Study
Additional Links
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Pubmed Data : Fam Pract. 2006 Jun;23(3):279-85. Epub 2006 Apr 3. PMID: 16585128
Study Type : Review
Additional Links
Substances : Vitamin B-12
[+]
Pubmed Data : Postgrad Med J. 2003 Apr;79(930):218-20. PMID: 12743340
Study Type : Commentary
Additional Links
Substances : Vitamin B-12
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Pubmed Data : Horm Metab Res Suppl. 1985;15:111-5. PMID: 3865878
Study Type : Commentary
Additional Links
Problem Substances : Metformin , Phenformin
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Pubmed Data : Am J Gastroenterol. 2009 Mar;104 Suppl 2:S5-9. PMID: 19262546
Study Type : Commentary
[+]
Pubmed Data : Aust Fam Physician. 2011 Sep ;40(9):705-8. PMID: 21894279
Study Type : Review
[+]
Pubmed Data : J Agric Food Chem. 2010 Sep 22 ;58(18):9925-30. PMID: 20799700
Study Type : Plant Study
Additional Links
Substances : Spirulina
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Pubmed Data : J Family Reprod Health. 2021 Sep ;15(3):141-149. PMID: 34721605
Study Type : Review
Additional Links
Substances : Folate, Vitamin B-12
Pharmacological Actions : Antioxidants
Additional Keywords : Risk Factors
[+]
Pubmed Data : J Agric Food Chem. 2016 Nov 16 ;64(45):8516-8524. Epub 2016 Nov 2. PMID: 27776413
Study Type : In Vitro Study
Additional Links
Substances : Chlorella (Algae)
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Pubmed Data : Brain Nerve. 2016 Apr ;68(4):407-20. PMID: 27056859
Study Type : Review
[+]
Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Adv Nutr. 2017 May ;8(3):463-472. Epub 2017 May 15. PMID: 28507011
Study Type : Review
[+]
Pubmed Data : Neurol Res. 2014 May 22:1743132814Y0000000396. Epub 2014 May 22. PMID: 24852503
Study Type : Review
[+]
Pubmed Data : Ugeskr Laeger. 2009 Oct 19;171(43):3099-101. PMID: 19852900
Study Type : Commentary
[+]
Article Publish Status : This is a free article. Click here to read the complete article.
Pubmed Data : Cell Rep. 2020 Mar 24 ;30(12):3981-3988.e3. PMID: 32209461
Study Type : In Vitro Study
Additional Links
Substances : Vitamin B-12
Pharmacological Actions : Neuroprotective Agents
[+]
Pubmed Data : J Agric Food Chem. 2009 Jul 22;57(14):6327-33. PMID: 19552428
Study Type : In Vitro Study
Additional Links

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One of the most remarkable papers I have read in the psychiatric literature was about a 57 year old woman who was treated with months of both antipsychotic and antidepressant medications and given two rounds of electroconvulsive treatment before anyone bothered to check her vitamin B12 level.
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