According to the NIH Office of Dietary Supplements, functional B12 deficiency is most commonly seen in patients with one or more of the following: Age over 50 stomach acid production declines with age, and stomach acid is required to free B12 from food PPI or H2 blocker use reflux medications suppress the acid needed for B12 absorption Metformin use, which interferes with B12 absorption directly Vegan or vegetarian diets B12 is found almost exclusively in animal products Gut conditions including celiac, IBS, SIBO, and Crohns MTHFR mutations that affect how B12 is metabolized once absorbed Heavy alcohol use The symptoms of low B12 are easy to dismiss: fatigue, brain fog, low mood, tingling in the hands or feet, weakness, and shortness of breath on mild exertion
2021;106(2):E592-601
Picture a woman in her late 40s
This cellular support translates to better skin texture, improved elasticity, and a more vibrant complexion over time
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As an obesity medicine physician scientist who regularly cares for patients with complex inflammatory conditions, this study reinforces what many of us have suspected clinicallythat the benefits of GLP-1 receptor agonists extend well beyond blood sugar control and weight loss and may fundamentally alter the disease trajectory for some of our highest-risk patients. Although this study cannot prove a causal link between GLP-1 medication and the effects seen on the patients taking them, it opens the door to future combinations of treatments for autoimmune disease with GLP-1 drugs