They typically come in the form of a needle and syringe, which many people find intimidating or downright unappealing
Y6R is a non-functional receptor in most mammals (Matsumoto et al., 1996)
You dont want to just be in the reference range, the optimal range for B12 is much higher and ideally, you want to be above 400, and there does not seem to be an upper limit or toxicity from high Vitamin B12 levels
Grape seed extract contains proanthocyanidins, which have a variety of effects that might be beneficial in managing health conditions
I try not to push people one way or the other
With respect to rapidly progressive dementia, Creutzfeldt- Jakob disease typically causes a dementia which worsens over weeks to months, being caused by prions