This improvement in insulin function is the key reason many PCOS patients experience better menstrual regularity and ovulation resumption within 3-6 months of starting treatment
In addition to its direct effects on beta cells, GIP also leads to increased glucagon secretion, and indirectly results in increased insulin secretion via communication between the alpha and beta cells of the pancreas ( via complex mechanisms, including stimulation of somatostatin secretion, which inhibits glucagon secretion, and indirectly via stimulation of insulin production, which then inhibits glucagon release ( Figure 1 Incretin action plays a large role on post-prandial secretion of insulin, and may account for up to 70% of hormone release ( Both incretins have effects outside the pancreas
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Some studies suggest that GLP-1 receptor activation might influence sympathetic outflow, potentially affecting heart rate through autonomic pathways, though human data are mixed and largely inferential
Evidence-based efficacy of glutathione as an oral-lightening agent On review of literature, we could find only two studies that evaluated the efficacy of oral glutathione as a skin-lightening agent