b12 injections vs sublingual treatment Efficacy of different routes of vitamin supplementation for the of patients with vitamin B12 deficiency: A systematic review and network meta-analysis B12 Injections vs. Oral Supplements:

Evaluate baseline labs if needed

A reduction in size, number and function of mitochondria is associated with aging, and supporting mitochondria with essential nutrients like B12 and NAD can potentially slow and even reverse the aging process

extra B12 is excreted if levels are normal Weight Loss: little evidence B12 shots cause weight loss Mood: helps if mood issues come from deficiency but not a standalone depression treatment The key takeaway is that B12's benefits come from correcting a deficiency, not supplying extra boosts to healthy individuals

Evidence level: Preclinical evidence only How to read this: Food intake was unchanged in a short mouse study

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