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B12 deficiency may cause nerve damage, such as numbness and tingling in the hands and feet

J Hum Hypertens

It is essential for the creation of red blood cells, DNA synthesis, and the maintenance of the nervous system

For example, Motus by Tonum (oral) reported about 10.4% average weight loss in human clinical trials over six months

Vegans, vegetarians, people over the age 50, anyone with stomach/bowel issues like chronic gastritis, leaky gut, IBS or celiac, and anyone who regularly takes medications such as Metformin, PPIs (used for GERD), H2 Receptor Antagonists (used for peptic ulcers), or anything that interferes with stomach acid production are actually at risk for vitamin B12 deficiency, and should supplement B12 regularly

B12 is naturally found in animal products, such as meat, poultry, fish, dairy, and eggs