There is "life extension" research that shows giving people blood intravenously from younger people improves health. But not by drinking it.
With adrenochrome, the oxidized adrenalin keeps the MAO enzyme busy which in turn elevates neurotransmitters. In the elderly, this can return levels to normal. In relatively healthy people, it can cause general symptoms of schizophrenia, like Kamala laughing at everything. The hard counter is straight niacin, which contributes a methyl group to accelerate breakdown of adrenalin and is a treatment for some schizophrenics. Give Biden a stack of niacin enriched toast and watch his brain switch off.