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After a full cycle, take a 4-week break before resuming
[39] The elderly are at increased risk because they tend to produce less stomach acid as they age, a condition known as achlorhydria, thereby increasing their probability of B 12 deficiency due to reduced absorption
Because your body cannot make B12 on its own, you must get it from food, supplements, or medical injections
It usually lasts weekly for 4-8 weeks
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