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Regarding your diet - yes, I have also cut out red meat, seafood, coffee, anything too sugary, although I must admit I'm still eating chicken (in smaller portions)

Food & Drug Administration recently assigned Human GRAS status to AOD 9604, meaning it is listed under the Generally Recognized As Safe (GRAS) program

Vitamin B12 is key to making red blood cells, DNA, and nerve health

This helps make sure treatment works well and keeps side effects low

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