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Then, a protein called intrinsic factor, produced by cells in the stomach lining, attaches to the freed B12
B12 is known for increasing metabolism, and vitamin absorption, which help to maintain a healthy body weight
Vegan and vegetarian athletes almost certainly need supplementation, as do those over 50 whose absorption naturally declines
If something needs tweaking, we tweak it
Individuals at risk of vitamin B12 deficiency include older adults, people with gastrointestinal disorders, those who have had gastrointestinal surgeries, individuals on a strict vegan diet, individuals who take metformin for blood sugar control, and people taking proton pump inhibitors for chronic heartburn
Human data is limited but growing
