So, do B12 injections help with B12 deficiency symptoms
B., Ali, Syed A., Jackson, Timothy N
This results from a tyramine-induced depletion of norepinephrine normally present in the readily releasable vesicle pool, and replacement of vesicular norepinephrine with tyramine (which functions as a false- or pseudo- neurotransmitter), which when released has no effect on postsynaptic adrenergic receptors (Figure 1)
Studies give extremely different results some show that high levels of IGF-1 in the elderly increase the risk of dementia, other that low levels of IGF-1 increase this risk
How many layers and levels are at play
10.3389/fphar.2019.01469 277 ZhaiA.ZhangY.ZhuX.LiangJ.WangX.LinY.et al (2011)