Some research indicates that Alzheimer’s can be caused by plaques in the brain; possibly young blood can dissolve such plaques . . . this is just a thought. I do not have knowledge here.
What I do remember reading years ago, was a book by Dr. Abram Hoffer, who apparently reversed his own mother’s Alzheimer’s with Niacin, vitamin B3. Niacin is a vasodialator - it enlarges constricted capillaries, so more blood can get through. It has been researched and used since the 1950s for heart assistance. An interesting side effect is enhanced orgasm, due to increased histamine production.
I haven’t seen any research indicating that. I am an RN and my wife has Alzheimer’s and I stay as current as possible about clinical trials and haven’t heard of any on that. She was tested and has a genetic marker that makes her likely to develop plaques. I’m not aware of anything in a blood transfusion that would stop the build up of plaques.
That's exactly how nitric oxide works with the various erection dis-function meds. BTW, B-12 injections are amazing for energy. However, they last only a day or two.