how to inject b12 vitamin Give a Injection: Step-By-Step Instructions Instruction Guide for Intramuscular (IM)
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Seniors are also more likely to be taking medication that can interfere with the absorption of B12
Yu H, Zhou X, Wang Y, Huang X, Yang J, Zeng J, Li G, Xie X, Zhang J (2020) Nicotinamide N -methyltransferase inhibits autophagy induced by oxidative stress through suppressing the AMPK pathway in breast cancer cells

Concurrent medical conditionssuch as Crohn's disease, coeliac disease, or gastric surgerycan impair absorption and delay treatment effects

The result is a vicious cycle where declining NAD+ leads to worse metabolic function, which can lead to weight gain, which increases NNMT activity further
