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Improper handling can compromise peptide stability and invalidate research data

Several factors can impair B12 absorption: Reduced stomach acid production (achlorhydria or hypochlorhydria), common in older adults and those taking proton pump inhibitors or H2-receptor antagonists long-term, impairs the release of B12 from food proteins Pernicious anaemia , an autoimmune condition destroying parietal cells and reducing intrinsic factor production, completely blocks the primary absorption pathway Gastrointestinal disorders including Crohn's disease, coeliac disease, or surgical removal of stomach or ileum sections directly damage absorption sites Metformin , commonly prescribed for type 2 diabetes, may reduce B12 absorption through unclear mechanisms

doi:10.3389/fnut.2019.00093

$149.99 5-amino-1MQ is a small molecule that blocks the activity of the enzyme called nicotinamide N-methyltransferase (NNMT)

e-pub ahead of print 7 May 2014