"an unlikely candidate has raised its head", really ?!?

Better blood flow... I can see that helping things. Wasn't Viagra originally being researched for blood pressure?

I know that recent scholarship correlated sleep quality with resistance to dementia onset. Call me crazy but having good sex is the surest precursor to a good nights sleep.

"Where the hell am I, and how come I have a raging hard on?"

I know the blood flow seems obvious, but lesser known is the fact that phosphodiesterase inhibitors have direct impacts on the nervous system. There's a PDE4 inhibitor that is commonly used in Japan to treat post-stroke inflammation. (Also, caffeine is a weaker, broad spectrum PDE inhibitor.)

"Firstly, PDE5 inhibitors could enhance memory and learning by increasing long-term potentiation mediated by the glutamate NO-cGMP intracellular pathway, as cGMP-activated protein kinase is thought to mediate memory consolidation.

Secondly, as cGMP is a known vasodilator, the cognitive effects of PDE inhibition could be explained by enhanced cerebrovascular function owing to increased delivery of glucose and oxygen to the brain. Finally, improved erections might alleviate performance anxiety and boost self-confidence, with potential benefits to mood, cognition, and general health."

https://www.nature.com/articles/nrurol.2013.309

A boner you'll never forget.

I've read just yesterday Wikipedia's page on Oxytocin, and it states that it delayed symptoms of Alzheimer's disease. Oxytocin is released during and/or after sex. This could be simply that people with Viagra prescriptions are more likely having more sex, and so more Oxytocin being released by the brain, and delaying Alzheimer's.

“May”