the KYDN neurons and then GnRH-secreting neurons) (25), the positive improvement of the metabolic impairment is probably not the only one needed to re-activate a normal reproductive profile, given that no significant changes in plasma LH concentrations were observed during the 6 months of treatment
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
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10.1371/journal.pone.0182558 114 LiuY.AoX.DingW.PonnusamyM.WuW.HaoX.et al (2018)
